Find a confidence interval for μ assuming that each sample is from a normal population.
a. = 24, s = 3, n = 7, 90 percent confidence
b. = 42, s = 6, n = 18, 99 percent confidence
c. = 119, s = 14, n = 28, 95 percent confidence
FIGURE 8.19
MINITAB’s Confidence Interval
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