Suppose x has a distribution with ? = 65 and? = 9.
(a) If random samples of size n = 16 are selected, canwe say anything about the x distribution of samplemeans?
No, the sample size is too small.Yes, the xdistribution is normal with mean ?x =65 and ?x =9.     Yes, the x distribution isnormal with mean ?x = 65 and?x = 0.6.Yes, the xdistribution is normal with mean ?x =65 and ?x = 2.25.
(b) If the original x distribution is normal,can we say anything about the x distribution of randomsamples of size 16?
No, the sample size is too small.Yes, the xdistribution is normal with mean ?x =65 and ?x =2.25.     Yes, the x distributionis normal with mean ?x = 65 and?x = 9.Yes, the xdistribution is normal with mean ?x =65 and ?x = 0.6.
Find P(61 ? x ? 66). (Round your answer to fourdecimal places.)
