Given that x is a normal variable with mean ? = 109 and standard deviation ? = 10, find the following probabilities. (Round your answers to four decimal places.) (a) P(x ≤ 120) (b) P(x ≥ 80) (c) P(108 ≤ x ≤ 117

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Given that x is a normal variable with mean ? = 109 and standard deviation ? = 10, find the following probabilities. (Round your answers to four decimal places.)

 
(a)  P(x ≤ 120)


(b)  P(x ≥ 80)


(c)  P(108 ≤ x ≤ 117)

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