X~ N(60, 9). Suppose that you form random samples of 25 from this distribution. Let X be the random variable of averages

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X N 60 9 Suppose That You Form Random Samples Of 25 From This Distribution Let X Be The Random Variable Of Averages 1 (37.71 KiB) Viewed 38 times

X~ N(60, 9). Suppose that you form random samples of 25 from this distribution. Let X be the random variable of averages. Let EX be the random variable of sums. Part (a) Part (b) Part (c) Part (d) Find the 40th percentile. (Round your answer to two decimal places.) 57.72 X Part (e) Sketch the graph, shade the region, label and scale the horizontal axis for X, and find the probability. (Round your answer to four decimal places.) P(56 < X < 62) = 2593 X Part (f) Sketch the graph, shade the region, label and scale the horizontal axis for X, and find the probability. (Round your answer to four decimal places.) P(28 < X<59) = .544 X Part (g) Give the distribution of ΣΧ. ΣΧ ~ Part (h) Find the minimum value for the upper quartile for EX. (Round your answer to two decimal places.) Part (i) Sketch the graph, shade the region, label and scale the horizontal axis for XX, and find the probability. (Round your answer to four decimal places.) P(1400 < ΣΧ < 1550) =|ο X