A call centre would like to know the mean number of calls it receives during peak hours. The manager randomly selects 32 different​ one-hour periods and determines the number of calls for each. For this​ sample, x-bar equals 95 and s squareds 2 ​= 230.What is the mean number of calls per​ one-hour period during peak hours with a​ 99% confidence​ interval?

    • 5 years ago
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