A random sample of n=49 observations is drawn from a population with a mean equal to...

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A random sample of n=49 observations is drawn from a population with a mean equal to...

A random sample of n=49 observations is drawn from a population with a mean equal to 59 and a standard deviation equal to 28.

a. Find the probability that x overbarx is less than 47.

b. Find the probability that x overbarx is greater than 69.

c. Find the probability that x overbarx falls between 47 and 67

math Statistics-And-Probability

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Answer 1

Answer #1

Sol: 28 そ<-3) = 001 (Fuorn Ζ-table

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Answer 2

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