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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 #2000008: Testing Statistical Hypothesis

Question: A newspaper in a large Midwestern city reported that the National Association of Realtors said that the mean home price last year was $116,800. The city housing department feels…

### Question #2000009: Descriptive Statistics

Question: A sample of 36 eggs is taken by the owner of chicken farm. He measures a mean weight of 30 grams with a standard deviation of 3 grams. The…

### Question #2000010: T-test: Testing hypotheses

Question: Deliverable Length: 3-4 paragraphs Details: A member of the management team at Widgecorp asks if an ANOVA test would be useful for any of the statistics you've produced to…

### Question #2000011: Normal Distribution problems

Question: A sample of 16 is taken from a population that has a normal distribution with mean 123 and standard deviation 20. The probability that the sample mean is less…

### Question #2000012: Confidence Intervals – Calculation

Question: A sample of 48 families is taken, and a sample mean income of $68,000 with a sample standard deviation of $12652 is calculated. Determine a 98% confidence interval for…

### 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…