X ~ N(60, 13). Suppose that you form random samples of 25 from this distribution. Let X
be the random variable of averages. Let ΣX be the random variable of sums.
Part (f)
Sketch the graph, shade the region, label and scale the horizontal axis forX,
and find the probability. (Round your answer to four decimal places.)P(19 < X < 57) = .2032incorrect
Part (g)
Give the distribution of ΣX.n(1500, 325) 325 is incorrect |
Part (h)
Find the minimum value for the upper quartile for ΣX.
(Round your answer to two decimal places.)
1512.15(incorrect)
Part (i)
Sketch the graph, shade the region, label and scale the horizontal axis for ΣX, and find the probability. (Round your answer to four decimal places.)P(1400 < ΣX < 1550) = .1775(incorrect)
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