A car sales company tries to evaluate the performance of each of its more than 400 branches. To do so, it chooses a rand

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answerhappygod
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A car sales company tries to evaluate the performance of each of its more than 400 branches. To do so, it chooses a rand

Post by answerhappygod »

A car sales company tries to evaluate the performance of each of
its more than 400 branches. To do so, it chooses a random sample of
40 branches and obtains their average performance. The average
performance is 4.5%. Use this informa)on, to build a 68% and 99%
confidence interval to es)mate the mean performance of all
branches, in each case.
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