Question

Assume the random variablex is normally distributed with mean p=85 and standard deviation o=5. Find the indicated probabiliP73

Answer 1

Remember that

z =(x - μ)/σ

we have

μ=85

σ=5

For x=73

Find out the value of Z1

z1=(73-85)/5

z1=-2.4

For x=76

Find out the value of Z2

z2=(76-85)/5

z2=-1.8

using a z-scores table values

we have that

P(73