Question 1179257
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Hi
Distribution: normal with µ = 120 and σ = 20
Using TI or similarly an inexpensive calculator like an Casio fx-115 ES plus
SELECT ONE:
P( 100 < x < 130) = normalcdf(100,130,120,20) = .5328

P( x > 75) = normalcdf(75,9999,120,20) = .9878 

Wish You the Best in your Studies.
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