Question 1179018
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Hi
Normal distribution: with µ = 29 and σ = 28
a) if a random sample of size n= 32 is drawn:
  x̄ = 29   and s = 28/ √32
Using TI or similarly an inexpensive calculator like an Casio fx-115 ES plus
 P (29 < x̄ < 31) = normalcdf(29,31, 29,28/√32) = .1569

Wish You the Best in your Studies.
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