Suppose x has a distribution with μ = 17 andσ = 13.
(a) If a random sample of size n = 42 is drawn, findμx, σxand P(17 ≤ x ≤ 19). (Roundσx to two decimal places and theprobability to four decimal places.)
| μx = |
| σx = |
| P(17 ≤ x ≤ 19) = |
(b) If a random sample of size n = 67 is drawn, findμx, σxand P(17 ≤ x ≤ 19). (Roundσx to two decimal places and theprobability to four decimal places.)
| μx = |
| σx = |
| P(17 ≤ x ≤ 19) = |
