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### Question #2000005: Confidence Intervals – Calculation

Question: A lawyer researched the number of years served by a sample of 46 different Justices of the Supreme Court. The average number of years served was 14.9 years with…

### Question #2000006: Working with Confidence Intervals

Question: To find the standard deviation of the diameter of wooden dowels, the manufacturer measures 19 randomly selected dowels and finds the standard deviation of the sample to be s…

### Question #2000007: Calculating Confidence Intervals

Question: Thirty-nine packages are randomly selected from packages received by a parcel service. The sample has a mean weight of 10.0 pounds and a standard deviation of 1.6 pounds. What…

### Question #2000013: Z-test Hypothesis Testing

Question: You're trying to explain null and alternative hypotheses to one of the senior managers at Company W and he's not "getting it" when you use snack food sales. Help…