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6. The grade point average for 10 randomly selected college students is: 2.9, 3.1, 3.4, 3.6,...

6. The grade point average for 10 randomly selected college students is: 2.9, 3.1, 3.4, 3.6, 3.1, 4.0, 2.5, 3.7, 3.0, 2.5.( Assume the sample is taken from a normal distribution)

a) Find the sample mean. (show all work)

b) Find the sample standard deviation.

c) Construct a 99% C. I. for the population mean

Math   Statistics-And-Probability   
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