A random sample of n = 100 observations is selected from a population with =29 a

Question

A random sample of n = 100 observations is selected from a population with =29 and =21. Approximate the probabilities shown below. a. P(x 228) c. P(x $ 28.2) b. P(22.1sxS 26.8) d. P(x2 27.0) Click the icon to view the table of normal curve areas. a. P(x 2 28)(Round to three decimal places as needed.) b. P(22.1 si s 26.8)(Round to three decimal places as needed) c. P(xS 28.2)Round to three decimal places as needed.) Ps 28 2)-(Round to three decimal places as needed) d. P02 270)- (Round to three decimal places as needed )

Explanation / Answer

a)  

b)

c)

d)

here mean=       = 29.000 std deviation   == 21 sample size       =n= 100 std error=x=/n= 2.1000

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