SOLUTION: The average public elementary school has 458 students. Assume the standard deviation is 97. If a random sample of 36 public elementary schools is selected, find the probability tha
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Question 1179429: The average public elementary school has 458 students. Assume the standard deviation is 97. If a random sample of 36 public elementary schools is selected, find the probability that the number of students enrolled is between 450 and 465. Answer by ewatrrr(24785) (Show Source):
Hi
Distribution: approximately normal with µ = 458 and σ = 97
Using TI or similarly an inexpensive calculator like an Casio fx-115 ES plus
Sample: n = 36
P(450 < x̄ < 465) = normalcdf(450,465,458, 97/√36) = .1896
Wish You the Best in your Studies.