Mathematics, 02.12.2019 18:31 lexibyrd120

Suppose that the length, in inches, of a witch’s or wizard’s wand is a normal random variable with parameters µ " 11 and σ 2 " 2. (a) what percentage of wands are over 12 inches? (b) given that a wand is greater than 12 inches, what is the probability it is greater than or equal to 15 inches?

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Suppose that the length, in inches, of a witch’s or wizard’s wand is a normal random variable with p...