Answer:
1. Suppose on a sample of Montanans it is found the mean salary is equal to 30,000. When we use a statistic like this to simply describe a sample, this is an example of:
a) an inferential statistic
b) a descriptive statistic
c) a sample median
d) random sampling
e) b and c
2. If we collect observations on 100 people, and measure their IQ, the 100 observations is:
a) a sample
b) a population
c) a sample with likely no variability
d) a or b are possibilities, depending on the scope of the investigation
e) a variable
Suppose the trace of a matrix is equal to 10. If this matrix is also an identity matrix, how many rows must the matrix have?
10
equal to the number of columns of the matrix
0
a and b
impossible to say without further information
4. If it is universally known in general that all cats have four legs, then the conclusion that your particular cat has four legs is an example of:
inductive inference
deductive inference
statistical inference
d) a mathematical function
e) none of the above
5. Suppose you have values on variable equal to , and wish to compute a measure of variation from the mean. Without knowing what the exact values of the variable are, which of the following measures will necessarily generate a positive number (which is of course different from zero) regardless of the values for ?
a) the sum of absolute deviations from the mean
b) the sum of deviations from the mean
c) the sum of squared deviations from the mean
d) the standard deviation
e) a and c
f) none of the above
6. One common interpretation of the derivative in mathematics is:
a quadratic function
an instantaneous rate of change
the limit of a linear function
none of the above
7. Consider the numbers 1, 2, 3, 4 assigned to values of a variable. The variable being measured is most likely:
a) quantitative
b) qualitative
c) one for which computing the standard deviation would likely be appropriate
d) one for which computing the median would definitely be inappropriate
e) a and c
8. Integration in calculus is generally used for:
computing the rate of change of one variable with respect to another
computing areas under curves
computing areas in rectangles only
none of the above
9. If the mean of some data set is equal to 10, then this necessarily implies:
a) 1/2 of the scores fall above and below the mean of 10
b) the score of 10 must exist in the actual data set of recorded values
c) the variance of the data is probably negative
d) the standard deviation cannot be greater than 10
e) the distribution is normal
f) none of the above
10. If you compute the arithmetic mean, the sum of deviations of scores from that mean are always equal to:
a) 1
b) 0
c) 0 or a positive number
d) a squared number
e) none of the above
Which of the following can form a cross section?
A a point and a triangle
B a plane and a cone
C a circle and a square
D a line and a point
Answer:
Imma say A i'm sorry if it is incorrect
Step-by-step explanation:
I love your pfp btw
What are these fractions as decimals: -5/6, -7 3/8, -3/11, 1 5/27
Answer:
0.83,-7.375,0.27,1.18
#Have nice day!Hope this helps! If It´s wrong i´m sorry:<~Regards~44014137Answer:
-0.83(3 goes on forever)
-7.375
-0.27(27 goes on forever)
-0.185(185 goes on forever)
Step-by-step explanation:
this is really easy, a fraction is really when broken down, is just a simple division problem, we will take the second problem as an example;
-7 3/8
to solve for the fraction, we can look at it as a problem itself
-7 ( 3 / 8 )
solve said division problem
3 / 8 = 0.375
and add whatever whole numbers you have to this, theres no need to change any proportional relationships between any of the numbers
-7.375
Find the midpoint of the line segment connecting (1,1) and
(3,-3).
Answer:
2,-1
Step-by-step explanation:
graph, find length between points (sqrt 20) and slope (-2). sqrt20/2=sqrt5.
change in y/change in x = -2, change in y squared + change in x squared= 5. solve system of equations to get x=1, y=-2, or x=-1, y=2. i think i did something wrong but the answer should be correct
find the value of x and the measure of each angle
Answer:
you can just type out like 30 degrees, 50 degrees, and 100 degrees or something like that
Step-by-step explanation:
C/2-3+6/D when c = 14 and d = 3
Answer:
im not entirely sure but i think 6
Step-by-step explanation:
14/2=7, 6/3=2, 7-3 is 4 and 4 + 2 is 6
Write an equivalent expression using the
associative property for (7 + 8) + 10.
[tex]\textsf{Hey there!}[/tex]
[tex]\bold{(7+8)+10}\\\\\bold{Do\ PEMDAS\ to\ solve}\\\\\bold{Parentheses}\\\bold{Exponents}\\\bold{Multiplication}\\\bold{Division}\\\bold{Addition}\\\bold{Subtraction}\\\\\\\bold{(7+8)+10}\\\bold{(7+8)=15}\\\bold{15+10=\underline{25}}\\\\\\\\\\\boxed{\boxed{\bold{Answer: 25}}}}\huge\checkmark[/tex]
[tex]\textsf{Good luck on your assignment and your day!}[/tex]
~[tex]\frak{Amohitrite1040:)}[/tex]
Tyler has 45% of his pay check remaining. What fraction of his pay check does he have remaining?
Answer:
If he has 45% of his cheak remaining we already have the remaining so we just to turn it into a fraction
First we put it over 100
45
100
Then we reduce it to the lowest terms
which would be
9/20
the equation is
7(4x-2)
Answer:
28x-14
Step-by-step explanation:
Please need help ASAP
Solve for the following triangle
Answer:
50
Step-by-step explanation:
as 40 + 90 + ? = 180 (Angle sum property)
so ? = 180 -130 = 50
PLEASE HELP ME?!!!!???
Answer:
2. 17/2
3. 5/2
4. 6
5. 9
6. 8
Step-by-step explanation:
Answer:
Hello! :) Have a good day!
2. 17/2
3. X = 5/2
4. X = 6
5. X = 9
6. X = 8
Is it possible to construct a sector such that the length of the radius is equal to the length of the arc created by its central angle?
Explain why or why not, and include the radius lengths and central angle measures that you tried.
Answer:
No
A 30 degree central angle would be a 30 degree arc.
The sin of 30 degrees is 0.5 so the arc would be just greater than 15, much less than 30.
Simplify: (4 - 5) - (13 - 18 + 2) (YOU WILL GET 25 POINTS IF YOU GET IT RIGHT)
(a) -1
(b) -2
(c) 1
(d) 2
Answer:
(d)
Step-by-step explanation:
Which is 2!
The equation y=x+5 describes a function. What happens to y as x increases?
There are 20 students in a class. A student is randomly chosen each day to record attendance. What is the probability that the same kid gets picked to record attendance two days in a row?
Answer:
the probability is 1/20
A basketball player made 35 baskets in a season. Of these 60% were three point shots. How many three point shots did the player make
Step-by-step explanation:
the Boscombe all very well football match well because I am 15 year
Restaurants frequently add an 18% tip on the pre-tax bill when the party is 8 people or more. The tax is calculated based on the bill before the tip is included. Last night, friends went out to dinner and decided to split the bill evenly. If the bill without tax or tip was $ and the tax was %, how much did each person owe?
The money each person owes at restaurants for dinner is $1.41.
What is tax?In mathematics, the tax calculation is related to the selling price and income of taxpayers. It is a charge imposed by the government on the citizens for the collection of funds for public welfare and expenditure activities. There are two types of taxes: direct tax and indirect tax.
Given that, Restaurants frequently add an 18% tip on the pre-tax bill when the party is 8 people or more.
The first step is to determine the total cost of the dinner. The total cost includes the cost of the dinner, tip and tax.
Total cost = Cost of the dinner + Tax + Tip
Tax = Cost of the meal x Percentage tax
Tax = $114.46 x 5%
Tax = $114.46 x 0.05 = $5.723
Tip = Percentage tip x Cost of the diner
Tip = 18% x $114.46
Tip = 0.18 x $114.46
Tip = $20.60
Total cost = $114.46 + $20.60 + $5.72 = $140.78
Amount each person owes = Total cost of the meal / Number of people
Amount each person owes = $140.78/10 = $1.41
Therefore, the money each person owes at restaurants for dinner is $1.41.
To learn more about the tax visit:
brainly.com/question/16423331.
#SPJ2
"Your question is incomplete, probably the complete question/missing part is:"
Restaurants frequently add an 18% tip on the pre-tax bill when the party is 8 people or more. The tax is calculated based on the bill before the tip is included. Last night, 10 friends went out to dinner and decided to split the bill evenly. If the bill without tax or tip was $114.46 and the tax was 5%, how much did each person owe?
Grandma's recipe for sugar cookies 1 cups butter 2 cups sugar 4 eggs 1/2 teaspoon baking powder 1 1/4 cups of flower 1/4 teaspoon salt
A spinner contains the numbers 1 through 70. What is the probability that the spinner will land on a number that is not a multiple of 12?
Answer:
5 out of 70
Step-by-step explanation:
all you have to do is figure all of the multiple of 12 in 70 which is 12, 24, 36, 48, and 60 so that's 5 numbers out of the 70
Find the rational number halfway between the two given rational numbers. 1/3 and 1/4 ?
the number given between is ?
Answer:
7/24 or 0.2196
Step-by-step explanation:
the difference between 1/3 and 1/4 is 1/12
half of 1/12 is 1/24
add 1/24 to 1/4 to get 7/24
subtract 1/24 from 1/3 to get 7/24
Answer:
the number given between 1/3 and 1/4 is 7/12
Step-by-step explanation: i hope it works for you
:)
Given log Subscript 3 Baseline 2 almost-equals 0.631 and log Subscript 3 Baseline 7 almost-equals 1.771, what is log Subscript 3 Baseline 14?
1.118
1.893
2.402
3.542
Answer:
I believe it is C
Step-by-step explanation:
Answer:
C. 2.402
Step-by-step explanation:
correct on edge!
What does this emoji mean?
Answer:
Nooo sort of end of the world
Step-by-step explanation:
Answer:
strested
Step-by-step explanation:
(4,-12) perpendicular y=14
Answer:
x = 4
Step-by-step explanation:
If two lines are perpendicular to each other, they have opposite slopes.
The first line is y = 14. Its slope is 0. A line perpendicular to this one will have a slope that is undefined, which is a vertical line.
Vertical lines have this equation: x = #
In this case, your x-value has to include 4.
Therefore, a line perpendicular to y = 14 that includes (4, -12) will have to be: x = 4.
Hope this helps!
6(x+4)+1 simplified
Answer:
6x+25
Step-by-step explanation:
Multiply it out.
6x+24+1=6x+25
Hope I helped!
Answer:
6x+ 25
Step-by-step explanation:
Distribute
6(
Question 7 of 10
For what value of x is the rational expression below equal to zero?
2-x/2 + x
A. O
B. 2
O C. -2
O D.-1
A lawn mower costs $250. Today it is on sale for $150. What percent has
been taken off the price of the lawn mower? (What percent is 150 of 250?)
raise r to the 2nd power, then find the quotient of the result and a
Do not simplify any part of the expression.
please help me!!!
Answer:
Step-by-step explanation:ncncbnc
2/5 + r = 1 and 4/5
What is r?
There are 1460 pupils in my school and 35 % are non-swimmers.
How many pupils can swim ?
Answer:
people who can swim = 1460 ÷ 100 × 35 = 14.6 × 35 = 511
Write an equation of the line that passes
through (4, 1) and has a slope of -2.
Answer:5
Step-by-step explanation: