Answer:
The total profit for the grain merchant selling 600 quintals of rice is Rs 12800. To calculate this, we first need to calculate the profit on one quintal. The profit percentage is 7%, so if a quintal costs Rs 250 the profit is 7% of 250 which is Rs 17.5. Now we multiply this with the number of quintals sold, which is 600, to get Rs 10500 as the profit. We then add in the overhead charges of Rs 1000 to get a total profit of Rs 12800. The selling price of 600 quintals of rice is therefore Rs 12800 plus Rs 250 times 600, which equals Rs 180000.
scores from the sit and reach test weren't normally distributed. what is the likely cause for this lack of normal distribution?
A normal distribution can appear utterly erratic due to a lack of data. Results from tests taken in class, for instance, are often regularly distributed.
Given information;
Scores from the sit and reach test weren't normally distributed.
To find what is the likely cause for this lack of normal distribution,
⇒ A normal distribution can appear utterly dispersed due to Insufficient Data. For instance, test scores in the classroom are often regularly distributed.
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Pls help!! Trying to do asap! First answer will get brainleist
Answer:
84
Step-by-step explanation:
Answer:
Step-by-step explanation:
Let, the dimension of cuboid are l=5x,b=4x and h=2x
Now, the surface area of cuboid =2(5x×4x+4x×2x+2x×5x)=76x2
Now,
76x2=1216
x2=16
x=4
Dimensions of cuboid are,
l=5x=5×4=20cm,b=4x=4×4=16cm
h=2x=2×4=8cm
Volume of cuboid=l×b×h=20×16×8=2560cm3
Hence, this is the answer.
Linear relationship.
The slope value of the linear relationship tells us how much Austin pays to his friend weekly, which is: $8.
How to Find the Slope of a Linear Relationship?A linear relationship between two variables, x and y, can be defined by the equation, y = mx + b, where the value of m is the slope and b is the y-intercept or starting value.
If we have a table that represents a linear relationship between two variables, x and y, what we need to do is to use two pairs of values from the table to find the change in y / change in x.
In this context, L = amount Austin owes his friend for t weeks, so the slope will be the amount Austin pays to his friend every week = change in L / change in t.
Using two pair of values from the table, (1, 32) and (4, 8):
Slope (m) = change in L / change in t = (32 - 8) / (1 - 4)
Slope (m) = 24/-3
m = -8
Therefore, the amount Austin will be paying to his friend weekly would be $8.
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Grayson owns a food truck that sells tacos and burritos. He only has enough supplies
to make 110 tacos or burritos. He sells each taco for $3.25 and each burrito for $7.
Grayson must sell a minimum of $560 worth of tacos and burritos each day. If x
represents the number of tacos sold and y represents the number of burritos sold,
write and solve a system of inequalities graphically and determine one possible
solution.
Using system of linear inequality, the number of tacos and burrito he sold was 56 and 54 respectively
System of Linear InequalityA system of linear inequalities in two variables consists of at least two linear inequalities in the same variables. The solution of a linear inequality is the ordered pair that is a solution to all inequalities in the system and the graph of the linear inequality is the graph of all solutions of the system.
To solve this problem, we have to write two system of inequality and then graph the inequalities to show the solution.
Let;
x = tacosy = burritosx + y = 110 ...eq(i)
7x + 3.25y ≥ 560 ..eq(ii)
From eq(i)
x + y 110
x = 110 - y ..eq(iii)
Put eq(iii) into eq(ii)
7(110 - y) + 3.25y ≥ 560
770 - 7y + 3.25y ≥ 560
770 - 3.75y ≥ 560
-3.75y ≥ 560 - 770
-3.75y ≥ -210
y ≤ 56
Assuming y is less than or equal to 56, x will be
x + 56 = 110
x = 54
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What does the equation look like after you combine like terms?
−3x + 2 − 4x = 16
7x+2=16
x+2=16
−x+2=16
−7x+2=16
Answer:
it'll look like the last one -7x + 2 = 16
Out of 168 randomly selected adults in the United States who were surveyed, 89 exercise on a regular basis. Construct a 98 % confidence interval for the proportion of all adults in the United States who exercise on a regular basis. Round to three decimal places.
98 % confidence interval for the proportion of all adults in the United States who exercise on a regular basis is 0.440 < P < 0.619.
What does a statistical random sampling entail?
A selection of participants from a population are chosen at random by the researcher using simple random sampling, a sort of probability sampling. Every person in the population has the same chance of being chosen. Then, data are gathered from as much of this randomly selected subgroup as possible.P = x/n
= 89/168
= 0.53
α= 0.02
∴Zc = Zi - α/2
= 2.326
Now, C.I = P ± Zc * √[P(1-P)/n]
= 0.5 ± 2.326 * √[(0.53(1-0.53)) / 168
= (0.440, 0.619)
∴98% C.I. = 0.440 < P < 0.619
Hence, 98 % confidence interval for the proportion of all adults in the United States who exercise on a regular basis is 0.440 < P < 0.619.
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Determine the degree measure of one angle of a 36-sided regular polygon. 170° 180° 6,120° 6,480°
Answer:
170 Degrees.
Step-by-step explanation:
If an interior angle is 170 degrees, that's your best bet.
PLEASE I NEED HELP I WILL GIVE YOU BRAINLIEST
in the graph of the inequality x-2y (less than or equal too) 4, which is a value for x on the boundary line and the x axis
4
-2
2
-4
The value of x on the boundary line and the x axis is found as 4.
Explain the term inequality?In mathematics, "inequality" refers to a relationship among two expressions and values that is not equivalent to each other. Therefore, inequality emerges from a lack of balance.When two components are equal, we use the sign "=," and if they are not equal, we use the symbol "," which stands for "not equal."For the given question,
The graph of inequality x-2y ≤ 4 is drawn.
Consider the graph,
The straight lien formed by the graph touches the x coordinate axis at (4,0).
Thus, the value of x on the boundary line and the x axis is found as 4.
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a ball of radius 14 has a round hole of radius 8 drilled through its center. find the volume of the resulting solid
By using the volume of sphere, it can be calculated that
Volume of the sphere after the hole is drilled = [tex]352\sqrt{33} \pi[/tex]
What is volume of sphere?
Volume of sphere is the total space taken by the sphere.
If r is the radius of the sphere, then volume of the sphere is
[tex]v = \frac{4}{3} \pi r^3[/tex]
Radius of the ball = 14
Radius of the ball after the hole is drilled = 8
By Pythagoras Theorem,
Height of the ball after the hole is drilled =[tex]\sqrt{14^2 - 8^2}[/tex] = [tex]\sqrt{132}[/tex]
Volume of the ball after the hole is drilled = [tex]\frac{4}{3} \pi (\sqrt{132})^3[/tex]
= [tex]\frac{4\pi \times 132 \times 2\sqrt{33}}{3}\\352\sqrt{33} \pi[/tex]
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a bin contains 4 items: 1 a, 1 b, 2 c and 6 d. a person randomly selects 3. how many different types of items will be selected
Using combinations, we know that 4 different types of items will be selected.
What are combinations?Combinations are mathematical operations that count the number of potential configurations for a set of elements when the order of the selection is irrelevant.
We can choose the components of combos in any order.
Permutations and combinations can be mixed up.
Combination formula: [tex]n C r=\frac{n !}{(n-r) ! r !}[/tex]
So, this formula, commonly known as the NCR formula, determines the number of combinations that may be made with r items out of the n available options.
We, therefore, have 4 objects, and a person chooses 3 at random.
[tex]\begin{aligned}& n C r=(n, r)=(4,3) \\& =\frac{4 !}{3 !(4-3) !} \\& =4 ! / 3 ! \\& =4\end{aligned}[/tex]
Therefore, using combinations, we know that 4 different types of items will be selected.
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HELP ASAP
50 POINTS!! + WILL GIVE BRAINLEIST
Answer:
Step-by-step explanation:
2+2+4
a measure of the long-run average value of a random variable used to represent the central location of a probability distribution is called a(n) .
The measure of the long -run average value of a random variable used to represent the central location of a probability distribution is called an expected value E(x).
As given in the question,
Reason with explanation :
The Mean represents the central location of the random variable.It represent the weighted average of the value taken by X.Weight represents the probability distribution.The expected average value of the many distributed value.The average value of a random variable to represents the central location is called expected value.Therefore, the measure of the long run average value of a random variable representing central location of the probability distribution is called the expected value.
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Software companies work hard to produce software without bugs. A particular company claims that 85% of the software it produces is bug free. A random sample of size 200 showed 156 softwareprograms were bug free.
a. Calculate the mean of the sampling distribution of the sample proportion.
The Central Limit Theorem establishes that the sampling distribution of the sample means with size n can be roughly equivalent to a normal distribution with mean and standard deviation for a normally distributed random variable X, with mean and standard deviation.
The Central Limit Theorem can also be used with skewed variables if n is at least 30.The mean of the sampling distribution of sample means is p for a proportion p in a sapling of size n, and the standard deviation is s=root of p(1-p)/n.This issue involves that:(A) Determine the sample proportion's sampling distribution's mean.The Central Limit Theorem states that 0.85
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Which of these relations is a function?
Graph D is a function because it passes the vertical line test
Vertical Line TestA vertical line test helps to find if the graph is a function or not. The vertical line in a coordinate system represents a set of infinite points having the same x coordinate values and different y coordinate values for each of its points. The vertical line is drawn parallel to the y-axis, if it cuts the curve at one distinct point then it has one y-value for the given x value and it follows the basic definition of a function.
Applying the vertical line test in the graphs given, only graph D is a function.
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one morning, ms. simon drove directly from her home to her workplace in 242424 minutes. what was her average speed, in miles per hour, during her drive that morning?
The average speed in miles per hour during her drive that morning is 43.5 miles per hour .
In the question ,
it is given that ,
the distance between home to freeway entrance is = 0.6 miles
the distance between freeway entrance to freeway exit is = 15.4 miles
the distance between freeway exit to workplace is = 1.4 miles
So , the distance from home to work place = 0.6 + 15.4 + 1.4 = 17.4 miles
we know that 24 minutes = 24/60 = 0.4 hours ,
the average speed = total distance / total time
= 17.4/0.4
= 43.5 miles per hour
Therefore , the average speed is 43.5 miles per hour .
The given question is incomplete , the complete question is
One morning, Ms. Simon drove directly from her home to her workplace in 24 minutes. what was her average speed, in miles per hour, during her drive that morning ?
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Use elimination to solve the equations
1. x - 2y = 4
-x + y = -2
2. -x + y = 3
3x + y = 11
3. -4x - 2y = -12
4x + 8y = -24
Answer:
Step-by-step explanation:
1. x=5
2. xy7
A final exam in Math 160 has a mean of 73 with standard deviation 7.8. If 24 students are randomly selected, find the probability that the mean of their test scores is greater than 78. A) 0.0103 B) 0.0008 C) 0.8962 D) 0.0036
The probability that the mean of their test scores is greater than 78 is 0.0301.
Given,
Mean = 73
Standard Deviation σ = 7.8
Number of students randomly selected = 24
Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event.
For an experiment having 'n' number of outcomes, the number of favorable outcomes can be denoted by x.
The formula to calculate the probability of an event is as follows.
Probability(Event) = Favorable Outcomes/Total Outcomes = x/n
The number of standard deviations from the mean is called the z - score and can be found by the formula
Z = (x - μ)/σ.
Z = (70 - 73)/(7.8/√24) = -1.88442228
P(z < -1.88) = 0.0301
Therefore, P(z < -1.88) = 0.0301
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Marko has $22. He needs at least $42 to go to a concert. How much more money does Marko need?
Marko needs the amount of money which would be $20 to go to a concert.
What is the Subtraction operation?Subtraction is a mathematical operation that deducts the right-hand operand from the left-hand operand.
for example 4 -2 = 2
We have been given that Marko has $22. He needs at least $42 to go to a concert.
We have to determine the required amount of money Marko
the required amount of money = cost of the concert - he has the amount
the required amount of money = $42 - $22
Apply the subtraction operation, and we get
the required amount of money = $20
Therefore, Marko needs the amount of money that would be $20.
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The following problem refers to a geometric sequence:
If a1= 5 and r = 3 find an
an=___
If geometric sequence has a1= 5 and r = 3 then the A(n) will be; 5 × 3^(n-1)
What is a geometric sequence?There are three parameters which differentiate between which geometric sequence we're talking about. The first parameter is the initial value of the sequence. The second parameter is the quantity by which we multiply previous term to get the next term.
The General form of a geometric sequence:
[tex]A(n) = A_1 \times r^{(n-1)}[/tex]
If a1= 5 and r = 3 then
A(n) = 5 × 3^(n-1)
Therefore, If geometric sequence has a1= 5 and r = 3 then the A(n) will be; 5 × 3^(n-1)
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what is the best way of writing a prolog rule that gives you all the possible coin combinations adding to a dollar?
The best way of writing a prolog rule that gives you all the possible coin combinations adding to a dollar is using membership rules and arithmetic condition.
The Prolog interpreter warns that it can only find one occurrence of one or more variables, which is strange, since typically variables are used to perform unification, pass values from one predicate to another, etc.
Arithmetic in Prolog
In arithmetic expression, + - * / symbols are special type of infix operator, and these operators are also known as arithmetic operators. In Prolog, operators are used as predicates but here operators are functions and these operators return a numerical value.
Arithmetic expressions can include variables, numbers, operators, and arithmetic functions. These will be written in parentheses with their arguments. These will return numerical values just like the arithmetic operators.
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in a science classroom, when labs are performed, students are seated at lab tables. if the teacher assigns 2 students to each lab table, 4 additional lab tables will be needed to seat all of the studetnds. if the teacher assigns 4 students to each lab table, 4 lab tables will not be used. how many students are in the science clas
Answer: 16 students
Step-by-step explanation:
2x + (2•4) = 4x
2x + 8 = 4x
-2x -2x
8 = 2x
(Divide by 2 on both sides)
vvv
2x/2= x
8/2 = 4
x = 4
(substitute 4 in for x)
2(4) + 8 = 4(4)
8+8 = 16
16 = 16
a lattice point is a point in the plane with integer coordinates. how many lattice points are on the line segment whose endpoints are $(3,17)$ and $(48,281)$? (include both endpoints of the segment in your count.) (a) 2 (b) 4 (c) 6 (d) 16 (e) 46
There are 4 lattice points on the line segment whose endpoints (3,17) &(48,281)
What is a Lattice point?
In a Cartesian coordinate system, a lattice point is a point whose x-coordinates and y-coordinates are both integers. A point in a regularly spaced array of points, known as a point lattice, that is at the intersection of two or more grid lines is referred to as a lattice point. Point lattices with unit cells that are square, rectangular, hexagonal, and other forms can be built in a plane. An unspecified point in a square array constitutes a point in a point lattice.
The difference in the y-coordinates is 281 - 17 = 264
the difference in the x-coordinates is 48 - 3 = 45.
The gcd of 264 and 45 is 3,
so the line segment joining (3,17) and (48,281) has a slope [tex]\[\frac{88}{15}\][/tex]
The points on the line have coordinates[tex]\[\left(3+t,17+\frac{88}{15}t\right).\][/tex]
If t is an integer, the y-coordinate of this point is an integer if and only if t is a multiple of 15.
The points where t is a multiple of 15 on the segment [tex]3\leq x\leq 48[/tex] are 3, 3+15, 3+30, and 3+45.
There are 4 lattice points on this line. Hence the answer is B
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The probability that a marksman will hit a target each time he shoots is 0. 89. If he fires 15 times, what is the probability that he hits the target at most 13 times?.
Answer:
Step-by-step explanation:
Correct option is A)
Based on the stock price model, what is the best prediction of what the price will do next? a. hold value b. keep increasing c. start decreasing d. no way to predict
The best prediction the price will do next is keep increasing.
What is stock price?
The price at which one share of a company would be purchased is known as the share price or stock price. A share's price is not constant; rather, it changes over time in response to market factors. It is likely to rise if the business is thought to be doing well or fall if it isn't living up to expectations.
A company's price rising more quickly indicates that investors are supporting the rally and that the stock will rise further.
On the other hand, a declining price trend with high volume suggests a possible downward trajectory. A high trade volume could also indicate a change in trend.
Hence, the best prediction the price will do next is keep increasing.
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You have $10,000 to invest in a stock portfolio. Your choices are Stock X with an expected return of 13 percent and Stock Y with an expected return of 8 percent. Your goal is to create a portfolio with an expected return of 12.4 percent. All money must be invested. How much will you invest in stock X? A. $800B. $1,200C. $4,600D. $8,800E. $9,200
The money invested in stock X is $8,800.
Given,
Total investment in stock portfolio=$10000
Expected return from stock X=13%=0.13
Expected return from stock Y=8%=0.08
Expected return from portfolio=12.4%=0.124
The portfolio return is calculated by taking the weighted average of individual stock returns.
Let x represent the portfolio weightage of stock X.
1-x is the portfolio weightage of stock Y.
money invested in stock X be
0.124=0.13x+0.08(1-x)
0.124=0.13x+0.08-0.08x
0.124-0.08=0.05x
0.044=0.05x
x=0.88
money invested in stock X=0.88*10000=$8800
Thus, the money invested in stock X is $8,800.
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an electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed with a standard deviation of 40 hours. how large a sample is needed if we wish to be 96% confident that our sample mean will be within 10 hours of the true mean?
A sample of at least 68 bulbs is needed to be 96% confident that our sample mean will be within 10 hours of the true mean.
What do you mean by sampling?
Sampling is the process of choosing the group from which you will actually collect data for your study. For instance, you could interview a sample of 100 students if you were examining the viewpoints of students at your university. With the help of sampling, you can test a statistical hypothesis on the features of a population.
According to the question,
We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:
[tex]\alpha =\frac{1-0.96}{2} =0.02[/tex]
Now, we have to find z in the Z table as such z has a p value of [tex]1-\alpha[/tex].
So it is z with a p value of [tex]1-0.02=0.98[/tex], so z= 2.055
Now, find the margin M as such
M = z*σ/√n
In which σ is the standard deviation of the population and n is the size of the sample.
In this problem, we have that:
σ = 40, M = 10,
M = z*σ/√n
[tex]10=2.055*\frac{40}{\sqrt{n} } \\10\sqrt{n}=82.2\\ \sqrt{n}=8.22\\ n=67.6[/tex]
Therefore, a sample of at least 68 bulbs is needed to be 96% confident that our sample mean will be within 10 hours of the true mean.
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back to assignment attempts keep the highest no score out of 2/ 2 10. missing data which of the following are valid reasons for why there may be missing data in a well-designed study? check all that apply. some respondents didn’t know the answer to the question. some respondents refused to answer the question. data for some respondents were lost or misrecorded. researchers always have access to all values of all variables in the data set of a well-designed study. why might eliminating respondents with missing data compromise the results of a study? a random sample may no longer be random if you eliminate some members of the sample. statistical software is not equipped to handle eliminating responses. continue without saving
There may be missing data in a well-designed study because some respondents didn’t know the answer to the question, some respondents refused to answer the question and data for some respondents were lost or misrecorded. A random sample may no longer be random if you eliminate some members of the sample so eliminating might respondents with missing data compromise the results of a study
The first question is:
Missing data which of the following are valid reasons for why there may be missing data in a well-designed study? check all that apply.
some respondents didn’t know the answer to the question. some respondents refused to answer the question. data for some respondents were lost or misrecorded. researchers always have access to all values of all variables in the data set of a well-designed study.The option 1, 2 and 3 may be possible reasons.
It is possible that some respondants did not know the answer of the question. Because it is not neccesary that every respondants know the answer of the quesions that are asked. So they can provide the wrong data and also not give the answer.
Some may refuse to answer because they don't want to answer or may be it is deficult to answer of those questions.
It may also possible that the the record were lost or misrecorded. Because there is lot of data that they have to organize and also possible there have many same detalis in the respondants that leads to the misrecoding.
The second question is:
Why might eliminating respondents with missing data compromise the results of a study?
a random sample may no longer be random if you eliminate some members of the sample. statistical software is not equipped to handle eliminating responses. continue without savingIf we eliminate a random sample then it is possible that the data may be biased and didn't involve the all factors. So it leads to wrong result and may harm the all process. So it directly effect the result of a study.
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Factorise the following: a) x² + 6x + 8 b) x²-9x + 18 c) x² - 8x-9 d) x² + 6x-27
a) To factorize this expression, we need to find two numbers that multiply to give 8 and add to give 6. The two numbers that fit this description are 4 and 2, so we can write the expression as x² + 6x + 8 = (x + 4)(x + 2).
b) To factorize this expression, we need to find two numbers that multiply to give 18 and add to give -9. The two numbers that fit this description are -6 and -3, so we can write the expression as x²-9x + 18 = (x - 6)(x - 3).
c) To factorize this expression, we need to find two numbers that multiply to give -9 and add to give -8. The two numbers that fit this description are -3 and 3, so we can write the expression as x² - 8x-9 = (x - 3)(x + 3).
d) To factorize this expression, we need to find two numbers that multiply to give -27 and add to give 6. The two numbers that fit this description are -9 and 3, so we can write the expression as x² + 6x-27 = (x + 9)(x - 3).
judy selected ten states and then calculated statistics on them. which statement best describes the resulting statistics?
The statement best describing is only statistics for the ten states are reported
The study of statistics focuses on gathering, organizing, organizing, analyzing, interpreting, and presenting data. Statistics can be used to make future predictions calculate the likelihood that a given event will occur, or provide information about a survey. It primarily serves to convey knowledge, compute probabilities, and store records. In essence, it improves our understanding of the world by using numbers and other quantitative data.
In the given case, a total of ten states were selected by Judy and then the statical analysis was made. As per the given options, the correct option is that only statistics for the ten states are reported. This is because the number of terms, which are the states is ten.
Complete Question
Judy selected ten states and then calculated statistics on them. Which statement best describes the resulting statistics?
Only statistics for the ten states are reported.
No statistics are reported.
Statistics for all fifty U.S. states are reported.
The number of states included in the report depends on whether an attribute, interactive or spatial query was used to make the selection.
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explain how the is related to the standard error of the estimated difference in average birth weight for smoking and nonsmoking mothers.
The average birthweight of a nonsmoker was between 1,000 and 5,000 grams. Babies born to smokers frequently weighed between 500 and 4500 grams.
Given,
What is the newborn's weight?
A newborn's body weight is referred to as birth weight. At birth, babies of European descent typically weigh between 2.5 and 4.5 kilograms, or about 3.5 kilograms on average. South Asian and Chinese babies typically weigh 3.26 kg.
Here,
Babies born to nonsmokers typically weighed between 1,000 and 5,000 grams. Babies of smokers typically ranged in weight from 500 to 4500 grams.
However, there are some obvious disparities between the two groups' typical ranges of birth weights. Since there are fewer newborns in the lower weight groups, over half of neonates among nonsmokers (56 out of 115, 48.7%) had birth weights between 3,000 and 4,000 grams. Less infants are born in the heavier weight categories; 40 of the 74 newborns delivered to smokers, or 54% of them, had birth weights between 2,000 and 3,000 grams.
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