r 8: Part Question 4 (of 5) value: 10.00 points We use the t distribution to con

Question

r 8: Part Question 4 (of 5) value: 10.00 points We use the t distribution to construct a confidence interval for the population mean when the underlying population standard deviation is not known. Under the assumption that the population is normally distributed, find to2,df for the following scenarios. Use Table 2. (Round your answers to 3 decimal places.) a. A 90% confidence level and a sample of 15 observations. b, A 95% confidence level and a sample of 15 observations. c. A 90% confidence level and a sample of 10 observations. d, A 95% confidence level and a sample of 10 observations. References eBook& Resources Worksheet Difficulty: 3 Hard Learning Obj the population SC 2.0 ODO FA FT F2

Explanation / Answer

a) df = 15 - 1 = 14

t0.05, 14 = 1.761

b) df = 15 - 1 = 14

t0.025, 14 = 2.145

c) df = 10 - 1 = 9

t0.05, 9 = 1.833

d) df = 10 - 1 = 9

t0.025, 9 = 2.262

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