1. A population of values follows a normal distribution with standard deviation 5 and unknown mean....

Question

Question

math Statistics-And-Probability

Answer 1

Answer #1

Ans:

a)

Population standard deviation, $\sigma =5$

sample size,n=16

sample mean,x-bar=24

b)

95% CI for the unknown population mean

=24+/-1.96*(5/sqrt(16))

=24+/-2.45

=(21.55, 26.45)

c)

No,30 is not a plausible population mean,as it is outside the confidence interval.

Answer 2

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