A variable is normally distributed with mean 16 and standard deviation 2.

a. Determine the quartiles of the variable.

b. Obtain and interpret the 85th percentile.

c. Find the value that65% of all possible values of the variable exceed.

d.Find the two values that divide the area under the corresponding normal curve into a

middle area of 0.95 and two outside areas of 0.025. Interpret the answer.