Answers
Answer:
am pretty sure it is the frist one
Related Questions
A correlation coefficient is a(n): a. independent variable that is used in a correlational study. b. numerical indicator of the strength and direction of a relationship between two factors. c. index of the practical rather than the statistical significance of research findings. d. numerical indicator of the statistical significance of the findings in a particular research study.
Answers
Answer:
b. numerical indicator of the strength and direction of a relationship between two factors.
Step-by-step explanation:
Correlation coefficient:
The correlation coefficient between two variables is how closely they are related.
For example, in vectors with high correlation coefficient, they are similar, while with low coefficient, they are significantly different. So the correct answer is given by option b.
Ted can change an advertisement on a billboard in 5hr. Marie can do the same job in 2hr. How long would it take them if they worked together? Write your answer as a fraction or mixed number, if necessary.
Answers
Answer:
Working together, they will finish the job in 1 hour, 25 minutes, and 42.6 seconds.
Step-by-step explanation:
Given that Ted can change an advertisement on a billboard in 5 hours, while Marie can do the same job in 2 hours, to determine how long it would take them if they worked together the following calculation must be performed:
Ted 1/5 in 1 hour
Marie 1/2 in 1 hour
1/5 + 1/2 = X
5X + 2X = 10
7X = 10
X = 10/7
X = 1 3/7
60/7 x 3 = 25.71
60 x 0.71 = 42.6
So, working together, they will finish the job in 1 hour, 25 minutes, and 42.6 seconds.
Find the value of x
22
18
20
8
Answers
Answer:
20
Step-by-step explanation:
because 3×20=60 , 60-6= 54 . 2x20=40 , 40+14=54 , 4x20=80 , 80-26=54 so the value of x is 20 good luck
Answer:
20
Step-by-step explanation:
Since all angles are congruent, the triangle is an equilateral triangle and all sides are congruent.
3x - 6 = 2x + 14
x = 20
4, 5, 3, 3, 1, 2, 3, 2, 4, 8, 2, 4, 4, 5, 2, 3, 6,2
Find the mean, median, and mode(s) of the data. Which measure best
represents the data? Explain your reasoning.
Soon this is due in 5 minutes
Answers
Answer:
Given data:
4, 5, 3, 3, 1, 2, 3, 2, 4, 8, 2, 4, 4, 5, 2, 3, 6,2Put the data in the ascending order:
1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 6, 8Mean, the average:
(1 + 2*5 + 3*4 + 4*4 + 5*2 + 6 + 8)/18 = 3.5Median, average of middle two numbers:
3Mode, the most repeated number:
2 (repeated 5 times)Mean is normally the best measure of central tendency, same applies to this data.
A researcher reports that 80% of high school seniors would pass a driving test, but only 45% of high school freshmen would pass the same driving test. Assume that the researcher’s claim is true. Suppose a driving test is given to a random sample of 90 high school seniors and a separate random sample of 85 high school freshmen. Let and be the sample proportions of seniors and freshmen, respectively, who pass the test. What are the shape and mean of the sampling distribution of ? skewed left with mean –0.35 skewed right with mean 0.625 exactly Normal with mean 0.35 approximately Normal with mean 0.35 approximately Normal with mean 0.625
Answers
Answer:
approximately Normal with mean 0.35
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]
A researcher reports that 80% of high school seniors would pass a driving test, but only 45% of high school freshmen would pass the same driving test.
This means that [tex]p_1 = 0.8, p_2 = 0.45[/tex]
Subtraction of Variable 1 by Variable 2:
By the Central Limit Theorem, the shape will be approximately normal.
The mean is the subtraction of the means of each proportion. So
[tex]p = p_1 - p_2 = 0.8 - 0.45 = 0.35[/tex]
So the correct answer is given by:
approximately Normal with mean 0.35
Mrs. Jones is 4 times as old as her son. The sum of their ages is 50 years. How old was Mrs. Jones when her son was born?
Answers
Answer:
30
Step-by-step explanation:
is mrs. jones is 40, her son is 10, sum = 50.
ten years before son was 0, mrs. jones was 30
which has a value of (2/3)-4
16/81
-81/16
81/16
12/8
Answers
Answer:
81/16
Step-by-step explanation:
(2/3)-4 has a value 81/16
PLEASE OR THE LOVE OF GOD HELP ME
Answers
Answer: C.
Step-by-step explanation:
if they deleat the answer im sorry
if y/8=4,then y/8x 8=4x
Answers
Answer:
y = 32
Step-by-step explanation:
y/8 = 4
multiply both sides by 8:
y = 4 x 8 = 32
Write each absolute value in a box to show the order from least to greatest.
|11| |–8| |–2| |5| |–12|
Answers
Answer:
|–2| |5| |–8| |11| |–12|
Answer:
|-2|,|5|,|-8|,|11|,|-12|
Step-by-step explanation:
This is the order because |-2| in absolute value is positive 2 and |11| in absolute value is still positive because you don't change the sign unless the ll was negative in absolute value.
Students recruited at the cafeteria at Hope College were blindly given a single Skittles® candy to put in their mouth. They were told the five possible flavors and then were asked which flavor they had. Of the 154 healthy students tested, 78 gave the correct answer. Of the 118 students tested who had stuffy or runny noses, 44 gave the correct answer.
1. Did the study involve random sampling, random assignment, both, or neither?
2. An appropriate analysis of the data shows that there is strong evidence that healthy students were more likely to give the correct answer. Is it appropriate to conclude that the health of the student affects ability to taste? Why or why not?
Answers
Answer:
1) both
2) Yes. It is appropriate to conclude that the health of the student affects ability to taste.
Step-by-step explanation:
Random Sampling is done when each element of the sample has equal probability of being chosen. In both the samples of healthy and runny nose students each student has equal probability of being tested.
Random Assignment is one in which there is a control group and experimental group. The control group contains all the participants and each participant has the equal probability of being placed in the experimental group. For example in this experiment each student has equal probability of being tested with the given chocolate bar.
2) Yes. It is appropriate to conclude that the health of the student affects ability to taste.
the probability of success in healthy student is 78/154= 0.5065 = 50.65%
the probability of success in runny nose student is 44/118= 0.3729 = 37.29%
From this we see the probability of success is more in healthy students as compared to runny nose students
50.65> 37.29
Therefore it is appropriate to conclude that the health of the student affects ability to taste.
Which best describes the fraction represented by the
shaded portion of the circle?
O Since 1 of the 6 equal parts is shaded, shaded
portion represents
O Since 1 of the equal parts is shaded and 5 are not
shaded, the shaded portion represents
o Since 5 of the 6 equal parts are unshaded, the
shaded portion represents
O Since 5 of the equal parts are unshaded, the shaded
portion represents
Answers
Answer:
where's the shaded circle? I need more information.
Answer:
the fraction is 4/9 and the question is Which best describes the fraction represented by the shaded portion of the diagram?
Since 4 of the 9 equal parts are shaded, the shaded portion represents Four-ninths.
Since 4 equal parts are shaded and 5 are not shaded, the shaded portion represents Four-fifths.
Since 5 of the 9 equal parts are not shaded, the shaded portion represents Five-ninths.
Since 5 of the equal parts are not shaded, the shaded portion represents Five-fifths.
Need help on this question
Answers
27. The traffic officer issued violation tickets to traffic
violators. If 68 of them composed 80% of the total
violators, how many violators are there in all?
A. 83
B. 84
C. 85
D. 86
28. There are 18 roses in a bunch of 24 flowers.
What percent of the flowers are roses?
A. 18%
B. 24% C. 60% D. 75%
29. A number is 20% of 50. What percent it is to
200?
A. 5%
B. 10% C.15% D. 20%
Please help
I really need it I'm gonna give u Brainliest
Answers
Answer:
27. C
28. D
29. A
Find the area. Simplify your answer.
x+8
x+7
Answers
Answer:
x² 15
Step-by-step explanation:
I'm not 100% sure.. sorry if I'm wrong..
okay i only have 40 points left and i cant figure out my goformative that my teacher put up if i can get one of yalls discord or anything to were you can help me please do
Answers
Answer:
add me keegan#0839
Step-by-step explanation:
Please help
34 is what percent of 150
Answers
Answer:
The answer i Think is 22.67%
2. Find the area; reduce to lowest terms:
Length: 2 3/4 feet width 2/5 feet
Answers
Answer:
1 2/20
Step-by-step explanation:
What is the area of a rectangle with the measurement of the length of 12 and width of 6
Answers
Answer:
72 units^2
Step-by-step explanation:
Given a triangle with B = 41˚, a = 21, and b = 12. Approximate the measure
of angle A to the nearest 0.1˚.
Answers
In the ordered pair of numbers (-2,8) the number - 2 is called the
and the number 8 is called the
Answers
Answer:
x co-ordinate and y co-ordinate
What is a unique fraction whose decimal form repeats? ( give a fraction that decimal repeats)
round the repeating decimal to the ten thousandths place
Answers
Answer:
1/9 0.1111
Step-by-step explanation:
1/9 = 0.11111111111....
Convert: 112 meters =______________________
centimeters
Answers
Answer: m cm
112.00 11,200
Step-by-step explanation:
Question 6 of 25
Today Charlie put a ring on layaway by making a down payment of $85 and
agreeing to pay $18 per month, starting next month, for 21 months. When will
Charlie receive the ring?
O A. In 21 months
O B. In 1 month
O C. Today
OD. In 18 months
Answers
Charlie will receive the ring in 21 months.
What does layaway mean?It is a method of buying something in which a person can make a downpayment to buy something at a store and the store holds the item on their behalf until the last payment is done after which they gain possession of it.
Charlie has put in a ring on layaway. This means that he will only receive the ring in 21 months after he has finished paying all the installments. He will not gain possession of the ring right away after making the downpayment of $85.
Thus, we have found that Charlie will receive the ring in 21 months. The correct answer is option A.
Learn more about layaway here: https://brainly.com/question/4428781
#SPJ2
HELP
Which of the following is an open statement?
14 ÷ 2 = 7
2x + 5x = 7x
3 + 10 = 13
3x = 12
Answers
Answer:
i think 3+10=13 is the open statement
The length of a side of a cube can be determinad
by finding the cube root of its volume. If a cube has
a volume of 64 cm3 what s the length of a side?
A 40 cm
B. 80 cm
C. 16.0 cm
D. 32.0 cm
Answers
Answer:
4 cm
which is none of the listed answers
Step-by-step explanation:
∛64 = 4
proof:
4x4x4 = 64
Can you help me please here is the image
Answers
Answer: D all of the above
Step-by-step explanation:
A. you can see that the majoritie of the area is dessort becuase of the long expance of lack of vegitation and water
B. Because there is no other water sourses the cities would have to be along water
C. Along the nile river is vegitation
D. Must be D.
A circle with center at (0, 0) passes through (0, 6). Find the circumference and area of the circle in
Answers
Answer:
Step-by-step explanation:
If the center is at (0,0) and a point on the circle is (0,6) we know that the radius of the circle is 6 units.
[tex]C=2\pi r\\ \\ C=12\pi\\ \\ A=\pi r^2\\ \\ A=36\pi [/tex]
WILL GIVE BRAINLIEST FOR CORRECT ANSWER Find the area of the shaded region only ( the purple part) :)
Answers
ILL GIVE BRAINLIEST TO WHO EVER CAN ANSWER MY LAST QUESTION