Suppose that you are conducting a test to see if the mean time that an 8-12 year old child spends watching TV a day is greater than 3.2 hours. You collect a sample of 55 children and find a sample mean of 3.7 hours with a sample standard deviation of 1.3 hours. The significance level for this test is .01. Hypothesis test results: Mean Sample Mean Std. Err. DF Test-Stat P-value 3.7 0.17529196 54 2.8523840.0031 The critical value for this test is 2.397. Use the critical value method to do the following. Write the answer in 3 or 4 complete sentences. Answers not in complete sentences will be deducted 2 points.: 1. Determine if we should reject or fail to reject the null hypothesis. 2. Explain why you are rejecting or failing to reject the null hypothesis. 3. Write the conclusion for the test. Make sure that you identify the variable that is being tested.

Suppose that you are conducting a test to see if the mean time that an 8-12 year old child spends watching TV a day is greater than 3.2 hours. You collect a sample of 55 children and find a sample mean of 3.7 hours with a sample standard deviation of 1.3 hours. The significance level for this test is .01. Hypothesis test results: Mean Sample Mean Std. Err. DF Test-Stat P-value 3.7 0.17529196 54 2.8523840.0031 The critical value for this test is 2.397. Use the critical value method to do the following. Write the answer in 3 or 4 complete sentences. Answers not in complete sentences will be deducted 2 points.: 1. Determine if we should reject or fail to reject the null hypothesis. 2. Explain why you are rejecting or failing to reject the null hypothesis. 3. Write the conclusion for the test. Make sure that you identify the variable that is being tested.

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Description: Suppose that you are conducting a test to see if the mean time that an 8-12 year old child spendswatching TV a day is greater than 3.2 hours. You collect a sample of 55 children and find a samplemean of 3.7 hours with a sample standard deviation of

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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If you periodically collect samples of 25 undergraduates, how much will the sample mean vary from one sample to the next?
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Does the sample size ? affect the standard deviation of all possible samplemeans? Explain your answer.
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