Because P(z .44) = .67, 67% of all z values are less than .44, and .44 is the 67th percentile of the stan- dard normal distribution. Determine the value of each of the following percentiles for the standard normal distri- bution (Hint: If the cumulative area that you must look for does not appear in the z table, use the closest entry):
a. The 91st percentile (Hint: Lookforarea.9100.)
b. The 77th percentile
c. The 50th percentile
d. The 9th percentile
e. What is the relationship between the 70th z percen- tile and the 30th z percentile?