1

30

2

0

3

10

4

40

5

-10

Sample Mean:

Sample Variance:

using the Sample Mean to predict the Population Mean

Standard Error of Sample Mean:

90% CI Lower Bound:

90% CI Upper Bound:

t statistic (assume true mean = 0):

p value (assume true mean = 0):

Can you reject true mean = 0 @ 10% level?

Can you reject true mean = 0 @ 5% level?

Can you reject true mean = 0 @ 1% level?