One cable company claims that it has excellent customer service. In fact, the company advertises that a technician will arrive within 40 minutes after a service call is placed. One frustrated customer believes this is not accurate, claiming that it takes over 40 minutes for the cable technician to arrive. The customer asks a simple random sample of 25 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 43.6 minutes with a standard deviation of 6.5 minutes. Assume that the population distribution is approximately normal. Test the customer's claim at the 0.05 level of significance. Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below. Ho : μ = 40 Ηa :μ. 40

One cable company claims that it has excellent customer service. In fact, the company advertises that a technician will arrive within 40 minutes after a service call is placed. One frustrated customer believes this is not accurate, claiming that it takes over 40 minutes for the cable technician to arrive. The customer asks a simple random sample of 25 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 43.6 minutes with a standard deviation of 6.5 minutes. Assume that the population distribution is approximately normal. Test the customer's claim at the 0.05 level of significance. Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below. Ho : μ = 40 Ηa :μ. 40

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

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