Question: A random sample of n equals 100 observations is selected from a population with mu equals 31 and sigma equals 24 . Approximate the probabilities

A random sample of n equals 100 observations is selected from a population with mu equals 31 and sigma equals 24

.

Approximate the probabilities shown below.

a.? P(x overbar greater than or equals?28)

b.? P(22.1less than or equals x overbarless than or equals?26.8)

c.? P(x overbar less than or equals?28.2)

d.? P(x overbar greater than or equals?27.0)

A random sample of n equals 100 observations is selected from a

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