A population of values has a normal distribution with μ=68.9μ=68.9 and σ=72.8σ=72.8. You intend to draw a random sample of size n=43n=43. Find P79, which is the mean separating the bottom 79% means from the top 21% means. The mean =  (Use 1 decimal place)

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A population of values has a normal distribution with μ=68.9μ=68.9 and σ=72.8σ=72.8. You intend to draw a random sample of size n=43n=43.

Find P79, which is the mean separating the bottom 79% means from the top 21% means.


The mean =  (Use 1 decimal place)



Hint: First use page 3 of the standard normal distribution page to find the critical value ZcZc at 79%
Then use the formula Z=¯x−μ(σ√n)Z=x¯-μ(σn) to solve for ¯x

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