Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 40; σ = 16 P(50 ≤ x ≤ 70) =

Question

Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.)

μ = 40; σ = 16

P(50 ≤ x ≤ 70) =

Answer 1

You can do this buy hand but this would require you to use a Z score chart.

I am going to use the TI 84 plus calculator.

Type 2nd vars (distr)

Go to normalcdf(

lower: 50

upper: 70

mean: 40

stdev: 16

Paste: 0.2356

mean: