An unknown distribution has a mean of 45 and a standard deviation c Samples of size n = 30 are drawn randomly from the population. Find the probability that the sample mean, xbar, is exactly 43.28. A) P(xbar = 43.28) = 0.8805 B) P( xbar = 43.28) = 0.1365 C) P(xbar = 43.28) = 0.6495 D) P(xbar 43.28) = 0.1195 %3D

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An unknown distribution has a mean of 45 and a standard deviation of 8.
Samples of size n = 30 are drawn randomly from the population.
Find the probability that the sample mean, xbar, is exactly 43.28.
A) P(xbar = 43.28) = 0.8805
B) P( xbar = 43.28) = 0.1365
C) P(xbar
43.28) = 0.6495
D) P(xbar = 43.28) = 0.1195
Transcribed Image Text:An unknown distribution has a mean of 45 and a standard deviation of 8. Samples of size n = 30 are drawn randomly from the population. Find the probability that the sample mean, xbar, is exactly 43.28. A) P(xbar = 43.28) = 0.8805 B) P( xbar = 43.28) = 0.1365 C) P(xbar 43.28) = 0.6495 D) P(xbar = 43.28) = 0.1195
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