Question 1197678
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Hi
Using TI or similarly an inexpensive calculator like an Casio fx-115 ES plus

Recommend Using stattrek.com to check Your results until 
You are comfortable Using Your Calculator.

Normal Distribution: µ = 80 and σ = 14

P(x ≤ 70) = normcdf( -9999, 70, 80, 14) = .2375

P( x ≥  95) = normcdf(95, 9999, 80, 14) = .142

P( 70 ≤ x ≤ 95) =  normcdf(70, 95, 80, 14) = .4148

Percentile score 72%:  z = Invnorm(.72) = .5828
{{{blue(sigma)*z + mu= blue (x)}}}  x = 14(.5828) + 80 = 88 rounded 

Wish You the Best in your Studies.
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