Question

The grade point average for 12 randomly selected college students is shown below. complete parts a) through

c)

2.4,1.8,2.4,0.3,3.1,0.9,1.5,2.3,2.7,4.0,3.5,3.4

Assume the population is normally distributed.

a) find the sample mean.

b)Find the sample standard deviation.

c) Construct a 99% confidence interval for the population mean μ.

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