One cable company claims that it has excellent customer service. In fact, the company advertises that a technician will arrive within 55 minutes after a service call is placed. One frustrated customer believes this is not accurate, claiming that it takes over 55 minutes for the cable technician to arrive. The customer asks a simple random sample of 4 other cable customers how long it has taken for the cable technician to arrive when they have called for one. The sample mean for this group is 65.7 minutes with a standard deviation of 5.9 minutes. Assume that the population distribution is approximately normal. Test the customer's claim at the 0.10 level of significance. Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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One cable company claims that it has excellent customer service. In fact, the company advertises that a technician will arrive within 55 minutes after a service call is
placed. One frustrated customer believes this is not accurate, claiming that it takes over 55 minutes for the cable technician to arrive. The customer asks a simple random
sample of 4 other cable customers how long it has taken for the cable technician to arrive when they have called for one. The sample mean for this group is 65.7 minutes
with a standard deviation of 5.9 minutes. Assume that the population distribution is approximately normal. Test the customer's claim at the 0.10 level of significance.
Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places.
Transcribed Image Text:One cable company claims that it has excellent customer service. In fact, the company advertises that a technician will arrive within 55 minutes after a service call is placed. One frustrated customer believes this is not accurate, claiming that it takes over 55 minutes for the cable technician to arrive. The customer asks a simple random sample of 4 other cable customers how long it has taken for the cable technician to arrive when they have called for one. The sample mean for this group is 65.7 minutes with a standard deviation of 5.9 minutes. Assume that the population distribution is approximately normal. Test the customer's claim at the 0.10 level of significance. Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places.
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