Question 1182958
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Hi
Normal Distribution:  µ = 69.5 and σ = 2.3
Using TI or similarly an inexpensive calculator like a Casio fx-115 ES plus
Continuous curve
Pick 'one'
P(64.7 > x > 73.4) = normalcdf(64.7,73.4, 69.5, 2.3) = .9366

Important You feel comfortable using Your calculator.
Wish You the Best in your Studies.
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