Question 1 On the basis of a sample of size 45, the mean hours freshmen spent...

Question

Question

Question 1 On the basis of a sample of size 45, the mean hours freshmen spent...

Question 1

On the basis of a sample of size 45, the mean hours freshmen spent on gymnasium per week was calculated to be 3.5 hours and standard deviation of s = 1.2 hours. A researcher wants to test H 0:μ = 4.1 hours against H a: μ < 4.1 hours at 5% significance level.

What test would you use here?

Group of answer choices

Z test

Cannot be determined.

T test

Question 2

On the basis of a sample of size 45, the mean hours freshmen spent on gymnasium per week was calculated to be 3.5 hours and standard deviation of s = 1.2 hours. A researcher wants to test H 0:μ = 4.1 hours against H a: μ < 4.1 hours at 5% significance level.

What is the test statistic value?

Group of answer choices

4.513

-3.354

0.971

Question 3

On the basis of a sample of size 45, the mean hours freshmen spent on gymnasium per week was calculated to be 3.5 hours and standard deviation of s = 1.2 hours. A researcher wants to test H 0: μ = 4.1 hours against H a:μ < 4.1 hours at 5% significance level.

What is the p-value of the test?

Group of answer choices

- 0.3015

1.000

0.000823

math Statistics-And-Probability

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

Add a comment

Answer 2

Similar Homework Help Questions

A past study claimed that adults in America spent an average of 18 hours a week...

A past study claimed that adults in America spent an average of 18 hours a week on leisure activities. A researcher wanted to test this claim. She took a sample of 10 adults and asked them about the time they spend per week on leisure activities. Their responses (in hours) are as follows. 12.0 13.3 22.6 22.9 22.5 33.1 16 17.2 20.1 20.3 Assume that the times spent on leisure activities by all adults are normally distributed. Using the 5%...
A researcher wished to compare the average amount of time spent in extracurricular activities by high...

A researcher wished to compare the average amount of time spent in extracurricular activities by high school students in a suburban school district with that in a school district of a large city. The researcher obtained a simple random sample of 60 high school students in a large suburban school district and found the mean time spent in extracurricular activities per week to be 6 hours with a standard deviation of 3 hours. The researcher also obtained an independent simple...
Previously, an organization reported that teenagers spent 4.5 hours per week, onaverage, on the phone. The organization...

Previously, an organization reported that teenagers spent 4.5 hours per week, onaverage, on the phone. The organization thinks that, currently, the mean is 4.5.Ten randomly chosen teenagers were asked how many hours per week theyspend on the phone. The level of significance is 0.05. The sample of teenagers’ time is: 3.0, 4.25, 5.5, 3.5, 7.0, 6.3, 2.0, 4.5, 3.7, 3.6 Population mean: Sample mean: Sample standard deviation: Level of significance: Sample size: Alternative hypothesis: (Ha) Test statistics: P-value: What is...

Previously, an organization reported that teenagers spent 4.5 hours per week, onaverage, on the phone. The organization...

Previously, an organization reported that teenagers spent 4.5 hours per week, onaverage, on the phone. The organization thinks that, currently, the mean isgreater than 4.5. Ten randomly chosen teenagers were asked how many hoursper week they spend on the phone. The level of significance is 0.05. The sample of teenagers’ time is: 3.0, 4.25, 5.5, 3.5, 7.0, 6.3, 2.0, 4.5, 3.7, 3.6, 7.2, 7.9 Population mean: Sample mean: Sample standard of deviation: Level of significance: Sample size: null hypothesis (Ho):...
A past study claimed that adults in America spent an average of 18 hours a week...

A past study claimed that adults in America spent an average of 18 hours a week on leisure activities. A researcher wanted to test this claim. She took a sample of 10 adults and asked them about the time they spend per week on leisure activities. Their responses (in hours) are as follows. 11.1 12.7 20.8 20.9 23.3 33.9 17 17.9 20.2 21.2 Assume that the times spent on leisure activities by all adults are normally distributed. Using the 5%...
section 9.5 A sample mean, sample size, and sample standard deviation are provided below. Use the...

section 9.5 A sample mean, sample size, and sample standard deviation are provided below. Use the one-mean t-test to perform the required hypothesis test at the 5% significance level x = 23, s = 6, n = 32, Ho H = 27, H.: H = 27 Click here to view a partial table of values of The test statistic ist=Q (Round to two decimal places as needed.) A sample mean, sample size, and sample standard deviation are provided below. Use...

A sample mean, sample size, and population standard deviation are given. Use the one-mean z-test to...

A sample mean, sample size, and population standard deviation are given. Use the one-mean z-test to perform the required hypothesis test at the given significance level. Use the P-value approach. x̄ = 259, n = 15, σ = 19, H 0: μ = 250, Ha : μ > 250, α = 0.01
QUESTION 2 Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on...

QUESTION 2 Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on the phone. The organization thinks that, currently, the mean is higher. Fifteen randomly chosen teenagers were asked how many hours per week they spend on the phone. The sample mean was 4.75 hours with a sample standard deviation of 2 hours. Assume that hours per week they spend on the phone are normally distributed. At a significance level of 5%, test the claim of...
Question 6 (1 point) A survey among freshmen at a certain university revealed that the number...

Question 6 (1 point) A survey among freshmen at a certain university revealed that the number of hours spent studying the week before final exams was normally distributed with mean 25 and standard deviation 7 What is the probability that a randomly selected student spent between 26 and 40 hours studying? Write only a number as your answer. Round to 4 decimal places (for example 0.0048). Do not write as a percentage. Your Answer: Answer Question 7 (1.2 points) The...

1. A random sample of 82 customers, who visited a department store, spent an average of...

1. A random sample of 82 customers, who visited a department store, spent an average of $71 at this store. Suppose the standard deviation of expenditures at this store is O = $19. What is the e 98% confidence interval for the population mean? 2. A sample of 25 elements produced a mean of 123.4 and a standard deviation of 18.32 Assuming that the population has a normal distribution, what is the 90% confidence interval for the population mean? 3....

Question 1 On the basis of a sample of size 45, the mean hours freshmen spent...

Homework Answers

Add Answer to:
Question 1 On the basis of a sample of size 45, the mean hours freshmen spent...

Post as a guest

Earn Coins

A past study claimed that adults in America spent an average of 18 hours a week...

A researcher wished to compare the average amount of time spent in extracurricular activities by high...

Previously, an organization reported that teenagers spent 4.5 hours per week, onaverage, on the phone. The organization...

Previously, an organization reported that teenagers spent 4.5 hours per week, onaverage, on the phone. The organization...

A past study claimed that adults in America spent an average of 18 hours a week...

section 9.5 A sample mean, sample size, and sample standard deviation are provided below. Use the...

A sample mean, sample size, and population standard deviation are given. Use the one-mean z-test to...

QUESTION 2 Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on...

Question 6 (1 point) A survey among freshmen at a certain university revealed that the number...

1. A random sample of 82 customers, who visited a department store, spent an average of...

Question 1 On the basis of a sample of size 45, the mean hours freshmen spent...

Homework Answers

Add Answer to: Question 1 On the basis of a sample of size 45, the mean hours freshmen spent...

Post as a guest

Earn Coins

Add Answer to:
Question 1 On the basis of a sample of size 45, the mean hours freshmen spent...