The formula used to compute a confidence interval for the mean of a normal population when n

Question:

The formula used to compute a confidence interval for the mean of a normal population when n is small is x 6 1t critical value2 s

!n What is the appropriate t critical value for each of the following confidence levels and sample sizes?

a. 95% confidence, n 17

b. 90% confidence, n 12

c. 99% confidence, n 24

d. 90% confidence, n 25

e. 90% confidence, n 13

f. 95% confidence, n 10

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