[M]-Normal-Distribution_Probability-for-the-Mean-of-n-New-Observations.md

[ND][Pop Sd] Probability for the Mean of n New Observations

Actual Code

Sample Task

The distribution for purchase amounts is normal with mean = $36 and standard deviation = $8.
Find the probability that the mean purchase amount for 16 customers exceeds $40.

standard_error <- 8 - sqrt(16)
1 - pnorm(40, 36, standard_error)