77 80 80 84 84 85 86 86 87 87 89 93 94 94 96 96...

77 80 80 84 84 85 86 86 87 87 89 93 94 94 96 96 97 97 97 98 99 100 100 102 102 103 104 104 104 105 105 106 106 109 110 110 115 125 127 128

An electric supplier tracks the response time to customers reported outages. The data given above is a random sample of 40 of the response time (in minutes) for one operating division of this utility during a single month.

The utility company claims that their response to emergency outages is under two hours. Using a confidence level of 95% and the proper test statistic, determine if the utility company on average does respond within the two hours.

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orchestra answered 1 year ago

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