Supposexhas a distribution with a mean of70and a standard deviation of15. Random samples of sizen=36are drawn.

(a)Describe thedistribution.

(b) Compute the mean and standard deviation of the distribution. (For each answer, enter a number.)

(c) (b)Find thezvalue corresponding to=65. (Enter an exact number.)

z=

(d)FindP(<65). (Enter a number. Round your answer to four decimal places.)

P(<65)