The number of potholes in any given 1 mile stretch of freeway pavement in Pennsylvania has a bell-shaped distribution. This distribution has a mean of 55 and a standard deviation of 9. Using the empirical rule, what is the approximate percentage of 1-mile long roadways with potholes numbering between 28 and 64?

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Q: (2) Compute EW, .

A:

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A: Given that  P(A) = 0.55, P(B) = 0.40, and P(A &amp; B) = 0.22

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Q: 11C6

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A: Tree No Diameter  (x) Age (y) 1 12 125 2 11.4 119 3 7.9 83 4 9 85 5 10.5 99 6 7.9 117…