The customer help center in your company receives calls from customers who need
ID: 3364217 • Letter: T
Question
The customer help center in your company receives calls from customers who need help with some of the customized software solutions your company provides. Your company claims that the average waiting time is seven minutes at the busiest times, 8 a.m. to 10 a.m., Monday through Thursday. One of your main clients has recently complained that every time she calls during the busy hours, the waiting time exceeds seven minutes. You conduct a statistical study to determine the average waiting time with a sample of 35 calls for which you obtain an average waiting time of 8.15 minutes. If the value of your test statistic is less than the critical value, the correct decision is to _____.
increase the sample size
reduce the sample size
fail to reject the seven-minute average waiting time claim
maintain status quo
reject the seven-minute claim
increase the sample size
reduce the sample size
fail to reject the seven-minute average waiting time claim
maintain status quo
reject the seven-minute claim
Explanation / Answer
Since this is a right tailed test and our test statistic is less than the critical value, we do not reject Ho.
Hence,
We fail to reject the seven-minute average waiting time claim.
Option C is correct.
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