The grade point averages (GPA) for 12 randomly selected college
students are shown on the right. Complete parts (a) through (c)
below. Assume the population is normally distributed. 2.3 3.4 2.6
1.6 0.7 4.0 2.2 1.2 3.6 0.1 2.1 3.1
Question content area bottom
Part 1 (a) Find the sample mean. x=2.24 2.24 (Round to two
decimal places as needed.)
Part 2 (b) Find the sample standard deviation. s=enter your
response here (Round to two decimal places as needed.)
Part 3 (c) Construct a 90% confidence interval for the
population mean u.
A 90% confidence interval for the population mean is ( .
(Round to two decimal places as needed.)
I need help with b, c and the last part please.
The grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) th
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answerhappygod
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