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A customer service phone line claims that the wait times before a call is answered by...

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Statistics

A customer service phone line claims that the wait times beforea call is answered by a service representative is less than 3.3minutes. In a random sample of 62 calls, the average wait timebefore a representative answers is 3.26 minutes. The populationstandard deviation is assumed to be 0.14 minutes. Can the claim besupported at α=0.08?

No, since test statistic is not in the rejection region definedby the critical value, reject the null. The claim is thealternative, so the claim is not supported

Yes, since test statistic is not in the rejection region definedby the critical value, reject the null. The claim is thealternative, so the claim is supported

Yes, since test statistic is in the rejection region defined bythe critical value, reject the null. The claim is the alternative,so the claim is supported

No, since test statistic is in the rejection region defined bythe critical value, reject the null. The claim is the alternative,so the claim is not supported

Answer & Explanation Solved by verified expert
3.7 Ratings (307 Votes)
Solution 33 326 014n 62This is the left tailed test The null and    See Answer
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