In a random sample of 44 downloadable books from a website, the mean cost is $8.58 with a standard deviation of $2.09. Which interval is the

Question

In a random sample of 44 downloadable books from a website, the mean cost is $8.58 with a standard deviation of $2.09. Which interval is the 95% confidence interval for the mean cost oof all the downloadable books on the website?
($7.77,$9.35)
($7.96, $9.20)
($8.26, $8.90)
($8.39, $8.77)

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Audrey 5 hours 2021-10-14T12:14:25+00:00 1 Answer 0

Answers ( )

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    2021-10-14T12:15:25+00:00

    Answer:

    ($7.96, $9.20)

    Step-by-step explanation:

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45:7+7-4:2-5:5*4+35:2 =? ( )