Let Y have the lognormal distribution with mean 67.5 and variance 143.30. Compute the following probabilities. (You may find it useful to reference the z table. Round your intermediate calculations to at least 4 decimal places, “z” value to 2 decimal places, and final answers to 4 decimal places.)
a.P(Y > 78)
b.P(62 < Y < 78)
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