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Category > Math Posted 14 Aug 2017 My Price 5.00

Problem 4. Normal distribution has mean 40 and a standard deviation s = 8.

 

 

 Problem 4. Normal distribution has mean 40 and a standard deviation s = 8.

Sample of n = 25 were selected. What is the probability that the sample mean

will be between 39 and 41?

Tip: For the distribution of sample mean, standard deviation will be not 8.

Apply formula for the standard deviation of sample mean: σ/√n, then convert

39 and 41 to z-score and use Appendix Table for Normal distribution.

Show work.

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SophiaPretty
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Status NEW Posted 14 Aug 2017 06:08 AM My Price 5.00

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