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 3 of 3: Draw a conclusion and interpret the decision.
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 3 of 3: Draw a conclusion and interpret the decision.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
Related questions
Question
![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 3 of 3: Draw a conclusion and interpret the decision.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb746646f-39dd-4312-845d-6abd1eeee77e%2F2d847d71-5862-4a76-803a-cbf14ee59fcc%2Fw3nbzr2_processed.png&w=3840&q=75)
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 3 of 3: Draw a conclusion and interpret the decision.
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