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In: Statistics and Probability

A bank claims that the mean waiting time in line is less than 1.7 minutes. A...

A bank claims that the mean waiting time in line is less than 1.7 minutes. A random sample of 20 customers has a mean of 1.5 minutes with a standard deviation of 0.8 minute. Test the bank’s claim at 0.01 level of significance.

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Expert Solution

Let denotes the mean waiting time.

There is not sufficient evidence to suppirt the claim that the mean waiting time in line is less than 1.7 minutes.

orchestra answered 1 year ago
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