Suppose x has a distribution with μ = 70 and σ = 9. (a) if random samples of size n = 16 are selected, can we say anything about the x distribution of sample means?

No, the sample size is too small.
Yes, the x distribution is normal with mean μ x = 66 and σ x = 1.5.
Yes, the x distribution is normal with mean μ x = 66 and σ x = 6.
Yes, the x distribution is normal with mean μ x = 66 and σ x = 0.4.
(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 μ x = 66 and σ x = 0.4.
Yes, the x distribution is normal with mean μ x = 66 and σ x = 1.5.
No, the sample size is too small.
Yes, the x distribution is normal with mean μ x = 66 and σ x = 6..
Find P(62 ≤ x ≤ 67). (Round your answer to four decimal places.)