he time taken to complete a particular task is normally distributed with a standard deviation of 15 minutes. A random sample of 8 people is selected and they complete the task in the following times (in minutes): 83 95 123 92 76 92 55 95 We use a 5% level of significance to test the claim that the mean time for completion of the task is 1 hour and 20 minutes.
he time taken to complete a particular task is normally distributed with a standard deviation of 15 minutes. A random sample of 8 people is selected and they complete the task in the following times (in minutes): 83 95 123 92 76 92 55 95 We use a 5% level of significance to test the claim that the mean time for completion of the task is 1 hour and 20 minutes.
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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The time taken to complete a particular task is
83 | 95 | 123 | 92 | 76 | 92 | 55 | 95 |
We use a 5% level of significance to test the claim that the
- The null and alternate hypotheses are :
-
Which one from here is the value of the test statistic :
z = -1.67t = -1.67z = 1.67t = 1.67 -
The p-value is
p-value > 0.05 or p-value < 0.05
Based on this evidence, what is the best conclusion
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