Find the sample standard deviation find the 99 confidence

The grade point averages (gpa) for 12 randomly selected college students are shown below. Assume the population is normally distributed:

2.3, 3.4, 2.9, 1.8, 0.9, 4.0, 2.4, 1.1, 3.6, 0.1, 2.4, 3.5

a) Find the sample mean

b) Find the sample standard deviation

c) Find the 99% confidence interval for population mean?

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Find the sample standard deviation find the 99 confidence : the grade point averages gpa for 12 randomly selected college students are shown below. assume the population is

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