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Refer to a random sample of 20 undergraduate students who worked an average of 13.5 hours per week for a university. Assume the population is normally distrihuted with a standard deviation of 5 hours per week. Test the claim that the average student works less than 15 hours per week at the alpha = 0.02 significance level by comparing the calculated z-score to the critical z-score. 1. Identify and write the null (Ho) and alternative hypotheses (На). 2. Calculate and show the standard error of the mean! 3. Calculate the z-score. 4. State if Ho is accepted or rejected. 5. Show the normal distribution diagram and identify the acceptance and rejection region (s) Z-score on your diagram Also show the critical

Refer to a random sample of 20 undergraduate students who worked an average of 13.5 hours per week for a university. Assume the population is normally distrihuted with a standard deviation of 5 hours per week. Test the claim that the average student works less than 15 hours per week at the alpha = 0.02 significance level by comparing the calculated z-score to the critical z-score. 1. Identify and write the null (Ho) and alternative hypotheses (На). 2. Calculate and show the standard error of the mean! 3. Calculate the z-score. 4. State if Ho is accepted or rejected. 5. Show the normal distribution diagram and identify the acceptance and rejection region (s) Z-score on your diagram Also show the critical

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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v. Refer to a random sample of 20 undergraduate students who worked an average of 13.5 hours per week for a university. Assume the population is normally distributed with a standard deviation of 5 hours per week. Test the claim that the average student works less than 15 hours per week at the alpha = 0.02 significance level by comparing the calculated z-score to the critical z-score. 1. Identify and write the null (Ho) and alternative hypotheses (Ha). 2. Calculate and show the standard error of the mean. 3. Calculate the z-score. 4. State if Ho is accepted or rejected. 5. Show the normal distribution diagram and identify the acceptance and rejection region (s). Z-score on your diagram Also show the critical
Transcribed Image Text:v. Refer to a random sample of 20 undergraduate students who worked an average of 13.5 hours per week for a university. Assume the population is normally distributed with a standard deviation of 5 hours per week. Test the claim that the average student works less than 15 hours per week at the alpha = 0.02 significance level by comparing the calculated z-score to the critical z-score. 1. Identify and write the null (Ho) and alternative hypotheses (Ha). 2. Calculate and show the standard error of the mean. 3. Calculate the z-score. 4. State if Ho is accepted or rejected. 5. Show the normal distribution diagram and identify the acceptance and rejection region (s). Z-score on your diagram Also show the critical
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