minutes. Due to recent changes in their call handling procedures, the company's management believes the mean call duration has increased significantly. To evaluate this belief, a random sample of 41 calls is analyzed. The sample data shows an average call duration of 12.8 minutes, with a standard deviation of 1.9 minutes. Test the management's belief at the 0.05 level of significance. State the null and alternative hypotheses associated with the test. ) What is the calculated value of the associated test statistic? What is the critical value of the associated test statistic? State your decision about the null hypothesis by comparing the calculated and critical values of the test statistic..
minutes. Due to recent changes in their call handling procedures, the company's management believes the mean call duration has increased significantly. To evaluate this belief, a random sample of 41 calls is analyzed. The sample data shows an average call duration of 12.8 minutes, with a standard deviation of 1.9 minutes. Test the management's belief at the 0.05 level of significance. State the null and alternative hypotheses associated with the test. ) What is the calculated value of the associated test statistic? What is the critical value of the associated test statistic? State your decision about the null hypothesis by comparing the calculated and critical values of the test statistic..
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
No need to answer part A
Transcribed Image Text:The average duration of customer support calls at QuickHelp Call Center has been 12
minutes. Due to recent changes in their call handling procedures, the company's
management believes the mean call duration has increased significantly. To evaluate
this belief, a random sample of 41 calls is analyzed. The sample data shows an
average call duration of 12.8 minutes, with a standard deviation of 1.9 minutes. Test
the management's belief at the 0.05 level of significance.
a) State the null and alternative hypotheses associated with the test.
b) What is the calculated value of the associated test statistic?
c) What is the critical value of the associated test statistic?
d) State your decision about the null hypothesis by comparing the calculated and critical
values of the test statistic..AM
e)
What is the p-value of the associated test statistic? State your decision about the null
hypothesis by comparing the p-value and the level of significance.
f) State your conclusion based on the decision about the null hypothesis.
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