$3.15 would be the cost, after the mark up is added.
Answer:
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Step-by-step explanation:
Answer:
The normality requirement for a confidence interval estimate of sigma is (stricter) than the normality requirement for a confidence interval estimate of mu. Departures from normality have a (greater) effect on confidence interval estimates of sigma than on confidence interval estimates of mu. That is, a confidence interval estimate of sigma is (less)
I am so so so sorry I do not know the answer but I might later in the shool year
