Questions from Applied Statistics

Q: The General Accounting Office conducted random testing of retail gasoline pumps in

The General Accounting Office conducted random testing of retail gasoline pumps in Michigan, Missouri, Oregon, and Tennessee. The study concluded that 49 percent of gasoline pumps nationwide are misla...

Q: Arsenic (a naturally occurring, poisonous metal) in home water

Arsenic (a naturally occurring, poisonous metal) in home water wells is a common threat. (a) What sampling method would you use to estimate the arsenic levels in wells in a rural county to see whether...

Q: Would you expect Starbucks to use a sample or census to measure

Would you expect Starbucks to use a sample or census to measure each of the following? Explain. a. The percentage of repeat customers at a certain Starbucks on Saturday mornings. b. The number of cha...

Q: Would you expect Noodles & Company to use a sample or census

Would you expect Noodles & Company to use a sample or census to measure each of the following? Explain. a. The annual average weekly revenue of each Noodles restaurant. b. The average number of weekl...

Q: A financial magazine publishes an annual list of major stock funds.

A financial magazine publishes an annual list of major stock funds. Last year, the list contained 1,699 funds. What method would you recommend to obtain a sample of 20 stock funds to estimate the 10-y...

Q: Examine each of the following statistics. Which sampling method was most

Examine each of the following statistics. Which sampling method was most likely to have been used (simple random, systematic, stratified, cluster)? a. A survey showed that 30 percent of U.S. business...

Q: On hot, sunny, summer days, Jane rents inner tubes

On hot, sunny, summer days, Jane rents inner tubes by the river that runs through her town. Based on her past experience, she has assigned the following probability distribution to the number of tubes...

Q: The National Claims History (NCH) contains records for 999,

The National Claims History (NCH) contains records for 999,645 Medicare patients who were discharged from acute care hospitals in October 2008. The Department of Health and Human Services performed a...

Q: Prior to starting a recycling program, a city decides to measure

Prior to starting a recycling program, a city decides to measure the quantity of garbage produced by single-family homes in various neighborhoods. This experiment will require weighing garbage on the...

Q: (a) For each data set, calculate the mean,

(a) For each data set, calculate the mean, median, and mode. (b) Which, if any, of these three measures is the weakest indicator of a “typical” data value? Why? a. Number of e-mail accounts (12 stude...