Suppose x has a distribution with μ = 11 and σ = 10.
(a) If a random sample of size n = 47 is drawn, find μx, σx and P(11 ≤ x ≤ 13). (Round σx to two decimal places and the probability to four decimal places.)
μx = |
σx = |
P(11 ≤ x ≤ 13) = |
(b) If a random sample of size n = 61 is drawn, find
μx, σx
and P(11 ≤ x ≤ 13). (Round
σx to two decimal places and the
probability to four decimal places.)
μx = |
σx = |
P(11 ≤ x ≤ 13) = |
(c) Why should you expect the probability of part (b) to be higher
than that of part (a)? (Hint: Consider the standard
deviations in parts (a) and (b).)
The standard deviation of part (b) is ____ larger than
the same as smaller than part (a) because of
the ---Select--- same smaller larger sample size.
Therefore, the distribution about μx
is ____ narrower the same wider .
Suppose x has a distribution with μ = 10 and σ = 7. (a) If a random sample of size n = 40 is drawn, find μx, σ x and P(10 ≤ x ≤ 12). (Round σx to two decimal places and the probability to four decimal places.) μx = σx = P(10 ≤ x ≤ 12) = (b) If a random sample of size n = 63 is drawn, find μx, σ x and P(10 ≤ x ≤ 12)....
Suppose x has a distribution with μ = 20 and σ = 19. (a) If a random sample of size n = 42 is drawn, find μx, σx and P(20 ≤ x ≤ 22). (Round σx to two decimal places and the probability to four decimal places.) μx = σx = P(20 ≤ x ≤ 22) = (b) If a random sample of size n = 68 is drawn, find μx, σx and P(20 ≤ x ≤ 22). (Round σx...
Suppose x has a distribution with μ = 11 and σ = 10. (a) If a random sample of size n = 36 is drawn, find μx, σx and P(11 ≤ x ≤ 13). (Round σx to two decimal places and the probability to four decimal places.) μx = σx = P(11 ≤ x ≤ 13) = (b) If a random sample of size n = 64 is drawn, find μx, σx and P(11 ≤ x ≤ 13). (Round σx...
Suppose x has a distribution with μ = 10 and σ = 9. (a) If a random sample of size n = 35 is drawn, find μx, σ x and P(10 ≤ x ≤ 12). (Round σx to two decimal places and the probability to four decimal places.) μx = σ x = P(10 ≤ x ≤ 12) = (b) If a random sample of size n = 60 is drawn, find μx, σ x and P(10 ≤ x ≤...
Suppose x has a distribution with μ = 13 and σ = 6. (a) If a random sample of size n = 35 is drawn, find μx, σ x and P(13 ≤ x ≤ 15). (Round σx to two decimal places and the probability to four decimal places.) μx = σx = P(13 ≤ x ≤ 15) = (b) If a random sample of size n = 61 is drawn, find μx, σ x and P(13 ≤ x ≤ 15)....
Suppose x has a distribution with μ = 27 and σ = 19. (a) If a random sample of size n = 42 is drawn, find μx, σx and P(27 ≤ x ≤ 29). (Round σx to two decimal places and the probability to four decimal places.) μx = σx = P(27 ≤ x ≤ 29) = (b) If a random sample of size n = 62 is drawn, find μx, σx and P(27 ≤ x ≤ 29). (Round σx...
Suppose x has a distribution with μ = 10 and σ = 2. (a) If a random sample of size n = 39 is drawn, find μx, σ x and P(10 ≤ x ≤ 12). (Round σx to two decimal places and the probability to four decimal places.) μx = σ x = P(10 ≤ x ≤ 12) = (b) If a random sample of size n = 56 is drawn, find μx, σ x and P(10 ≤ x ≤...
Suppose x has a distribution with μ = 21 and σ = 17. (a) If a random sample of size n = 36 is drawn, find μx, σx and P(21 ≤ x ≤ 23). μx = σx = P(21 ≤ x ≤ 23) = (b) If a random sample of size n = 62 is drawn, find μx, σx and P(21 ≤ x ≤ 23). μx = σx = P(21 ≤ x ≤ 23) =
Suppose x has a distribution with μ = 82 and σ = 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 μx = 82 and σx = 0.6.No, the sample size is too small. Yes, the x distribution is normal with mean μx = 82 and σx = 2.25.Yes, the x distribution is normal with mean μx = 82...
-/9 points BBUNDERSTAT126.5.011. Suppose x has a distribution with 10 and a = 5. (a) If a random sample of size n = 41 is drawn, find and RX10 X 12). (Round , to two decimal places and the probability to four decimal places.) 07 P(10 SX S12) - and P(10 SX512). (Round to two decimal places and the probability to four decimal places.) (b) If a random sample of size n = 73 is drawn, find x = 0...