4. The annual precipitation X in a city is modeled by a normal distribution with a mean value of µx = 125 cm and a coefficient of variation of dx = 0.2. Determine the following: a) P(100 cm

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4. The annual precipitation X in a city is modeled by a normal distribution with a mean value of ux = 125 cm and a
coefficient of variation of 8g = 0.2. Determine the following:
а) Р(100 ст <X <140 ст)
b) The value xo such that the probability of the annual precipitation exceeding xo is only 1/3 of that of not
exceeding xo.
Transcribed Image Text:4. The annual precipitation X in a city is modeled by a normal distribution with a mean value of ux = 125 cm and a coefficient of variation of 8g = 0.2. Determine the following: а) Р(100 ст <X <140 ст) b) The value xo such that the probability of the annual precipitation exceeding xo is only 1/3 of that of not exceeding xo.
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