A Local Retailer Claims That the Mean Waiting Time Is

question 65

Essay

A local retailer claims that the mean waiting time is less than 9 minutes. A random sample of 20 waiting timeshas a mean of 7.4 minutes with a standard deviation of 2.1 minutes. At α = 0.01, test the retailerʹs claim.Assume the distribution is normally distributed. Round the test statistic to the nearest thousandth.

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Definitions:

Divergent

Thinking or problem solving that involves exploring many possible solutions; often associated with creativity.

Disordered

Characterized by disruption or dysfunction, especially in mental health, leading to distress or difficulty in functioning normally.

Divergent Thinking

An intellectual strategy or technique designed to elicit innovative solutions by considering a wide range of options.

Stapler

A mechanical device that joins pages of paper or similar material by driving a thin metal staple through the sheets and folding the ends.