A population of values has a normal distribution with μ=128.5 and σ=39.9. You intend to draw a random sample of size n=31. Find the probability that a sample of size n=31 is randomly selected with a...

A population of values has a normal distribution with μ=128.5 and σ=39.9. You intend to draw a random sample of size n=31.


Find the probability that a sample of size n=31 is randomly selected with a mean less than 106.3.


P(M
< 106.3)="">



Enter your answers as numbers accurate to 4 decimal places. Answers obtained using exact
z-scores or
z-scores rounded to 3 decimal places are accepted.