stats probabilities help again

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Oct 23rd, 2017

Standardized z-score is z = (x - 44)/6.5

(a) P(x <= 60) = P(z <= (60-44)/6.5) = P(z <= 2.4615)  = 0.9931

(b) P(x >= 50) = P(z >= (50-44)/6.5) = P(z >= -0.9231)  = 0.8220

(c) P(50 <= x <= 60) = P(-.09231 <= z <= 2..4615) = 0.8151

Apr 22nd, 2015

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Oct 23rd, 2017
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Oct 23rd, 2017
Oct 24th, 2017
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