For random samples of size n=16 selected from a normal distribution with a mean of u=75 and a standard deviation of σ=20, find each of the following: a. The range of sample means that defines the...

For random samples of size n=16 selected from a normal distribution with a mean of u=75 and a standard deviation of σ=20, find each of the following:

a. The range of sample means that defines the middle 95% of the distribution of sample means

b. The range of the sample means that defines the middle 99% of the distribution of sample means