Question

Find a confidence interval for μ assuming that each sample is from a normal population. (Round the value of t to 3 decimal places and your final answers to 2 decimal places.)

(a) 1formula63.mml = 22, s = 3, n = 6, 90 percent confidence.

The 90% confidence interval is to (b) 1formula63.mml = 40, s = 4, n = 19, 99 percent confidence. The 99% confidence interval is to (c) 1formula63.mml = 123, s = 10, n = 20, 95 percent confidence. The 95% confidence interval is to

Answer 1

a)

90% confidence interval is 19.53 to 24.47

b)

99% confidence interval is 37.36 to 42.64

c)

95% confidence interval is 118.32 to 127.68