70, 11). Suppose that you form random samples of 25 from this distribution. Let X be the random variable of averages. Let 2X e the random variable of sums. O Part (a) O Part (b) O Part (c) O Part (d) Find the 40th percentile. (Round your answer to two decimal places.) 67.2137 O 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(66 < X< 72) = | 0.7839 O 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< 66) =0.0345 O Rort (a)

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