Question
An efficiency expert is hired to improve productivity at a company. She administers an efficiency to test a simple random sample of the employees, implements a productivity training course, and administers the efficiency test again one month later to the same employees tested originally. The efficiency test results are below. Employee # #1 #2 #3 #4 #5 #6 #7 #8 #9 #10 #11 #12 #13 #14 #15
Before 21 25 45 28 23 27 22 28 39 35 34 40 27 20 33
After 32 25 36 47 37 30 40 39 28 48 28 41 27 33 28
Test score differences are known to come from a normally distributed population. Use the p-value method and a 8% significance level to test the claim that employee efficiency improved after the productivity training course.
What is the statistical conclusion?
Before 21 25 45 28 23 27 22 28 39 35 34 40 27 20 33
After 32 25 36 47 37 30 40 39 28 48 28 41 27 33 28
Test score differences are known to come from a normally distributed population. Use the p-value method and a 8% significance level to test the claim that employee efficiency improved after the productivity training course.
What is the statistical conclusion?
A Fail to reject H0.
B Reject H0.
This question is taken from Math 227 – Statistics » Spring 2023 » 18KC Testing a Claim About Two Dependent Samples_ Matched Pairs & Two Variances or Standard Deviations
