Suppose x has a distribution with = 38 and = 9. (a) If random samples of size n = 16 are selected, can we say anything about the x distribution of sample means?

Yes, the x distribution is normal with mean _x = 38 and _x = 2.25.Yes, the x distribution is normal with mean _x = 38 and _x = 0.6.No, the sample size is too small.Yes, the x distribution is normal with mean _x = 38 and _x = 9.

(b) If the original x distribution is normal, can we say anything about the x distribution of random samples of size 16?

Yes, the x distribution is normal with mean _x = 38 and _x = 0.6.Yes, the x distribution is normal with mean _x = 38 and _x = 2.25.No, the sample size is too small.Yes, the x distribution is normal with mean _x = 38 and _x = 9.

Find P(34 x 39). (Round your answer to four decimal places.)