The board of a major credit card company requires that the mean wait time for customers when they call customer service is at most 4.00 minutes. To make sure that the mean wait time is not exceeding the requirement, an assistant manager tracks the wait times of 57 randomly selected calls. The mean wait time was calculated to be 4.36 minutes. Assuming the population standard deviation is 1.29 minutes, is there sufficient evidence to say that the mean wait time for customers is longer than 4.00 minutes with a 95 % level of confidence? Step 3 of 3: Draw a conclusion and interpret the decision. Answer 国 Tables Keypad Keyboard Shortcuts We fail to reject the null hypothesis and conclude that there is sufficient evidence at a 95 % level of confidence to support the claim that the mean wait time is longer than 4.00 minutes. We reject the null hypothesis and conclude that there is sufficient evidence at a 95 % level of confidence to support the claim that the mean wait time is longer than 4.00 minutes. We fail to reject the null hypothesis and conclude that there is insufficient evidence at a 95 % level of confidence to support the claim that the mean walt time is longer than 4.00 minutes. We reject the null hypothesis and conclude that there is insufficient evidence at a 95 % level of confidence to support the claim that the mean wait time is longer than 4.00 minutes.
The board of a major credit card company requires that the mean wait time for customers when they call customer service is at most 4.00 minutes. To make sure that the mean wait time is not exceeding the requirement, an assistant manager tracks the wait times of 57 randomly selected calls. The mean wait time was calculated to be 4.36 minutes. Assuming the population standard deviation is 1.29 minutes, is there sufficient evidence to say that the mean wait time for customers is longer than 4.00 minutes with a 95 % level of confidence? Step 3 of 3: Draw a conclusion and interpret the decision. Answer 国 Tables Keypad Keyboard Shortcuts We fail to reject the null hypothesis and conclude that there is sufficient evidence at a 95 % level of confidence to support the claim that the mean wait time is longer than 4.00 minutes. We reject the null hypothesis and conclude that there is sufficient evidence at a 95 % level of confidence to support the claim that the mean wait time is longer than 4.00 minutes. We fail to reject the null hypothesis and conclude that there is insufficient evidence at a 95 % level of confidence to support the claim that the mean walt time is longer than 4.00 minutes. We reject the null hypothesis and conclude that there is insufficient evidence at a 95 % level of confidence to support the claim that the mean wait time is longer than 4.00 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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Transcribed Image Text:The board of a major credit card company requires that the mean wait time for customers when they call customer service is at most 4.00 minutes. To make sure that the
mean wait time is not exceeding the requirement, an assistant manager tracks the wait times of 57 randomly selected calls. The mean wait time was calculated to be 4.36
minutes. Assuming the population standard deviation is 1.29 minutes, is there sufficient evidence to say that the mean wait time for customers is longer than 4.00
minutes with a 95 % level of confidence?
Step 3 of 3: Draw a conclusion and interpret the decision.
E Tables
E Keypad
Answer
Keyboard Shortcuts
We fail to reject the null hypothesis and conclude that there is sufficient evidence at a 95 % level of confidence to support the claim that the mean wait time is longer
than 4.00 minutes.
{1}
We reject the null hypothesis and conclude that there is sufficient evidence at a 95 % level of confidence to support the claim that the mean wait time is longer than
4.00 minutes.
>
u a o
We fail to reject the null hypothesis and conclude that there is insufficient evidence at a 95 % level of confidence to support the claim that the mean wait time is longer
than 4.00 minutes.
%3D
We reject the null hypothesis and conclude that there is insufficient evidence at a 95 % level of confidence to support the claim that the mean wait time is longer than
4.00 minutes.
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