Questions from Applied Statistics

Q: (a) Use Excel to prepare a line chart to display

(a) Use Excel to prepare a line chart to display the skier/snowboarder data. Modify the default colors, fonts, etc., to make the display effective. (b) Describe the pattern, if any.

Q: An ad for a cell phone service claims that it’s percent of

An ad for a cell phone service claims that it’s percent of “dropped calls” was significantly lower than that of its main competitor. In the fi ne print, the percents were given as 1.2 percent versus 1...

Q: Calculate each Poisson probability: a. More than 10

Calculate each Poisson probability: a. More than 10 arrivals with λ = 8.0. b. No more than 5 arrivals with λ = 4.0. c. At least 2 arrivals with λ = 5.0

Q: Vail Resorts uses various types of scales and questions on their surveys

Vail Resorts uses various types of scales and questions on their surveys. Here is a question from their guest satisfaction survey that uses a five-point scale. (a) Would the measurement level for the...

Q: A recent study of 231,164 New Jersey heart attack patients

A recent study of 231,164 New Jersey heart attack patients showed that those admitted on a weekday had a 12.0 percent death rate in the next three years, compared with 12.9 percent for those admitted...

Q: Would you use a sample or a census to measure each of

Would you use a sample or a census to measure each of the following? Why? a. The model years of the cars driven by each of your five closest friends. b. The model years of the cars driven by each stu...

Q: (a) Use Excel to prepare a line chart to display

(a) Use Excel to prepare a line chart to display the data on housing starts. Modify the default colors, fonts, etc., to make the display effective. (b) Describe the pattern, if any.

Q: Would you use a sample or a census to measure each of

Would you use a sample or a census to measure each of the following? Why? If you are uncertain, explain the issues. a. The mean time battery life of your laptop computer in continuous use. b. The num...

Q: The target population is all stocks in the S&P 500

The target population is all stocks in the S&P 500 index. Is each of the following a parameter or a statistic? a. The average price/earnings ratio for all 500 stocks in the S&P index. b. The proporti...

Q: Under a recent U.S. Food and Drug Administration (

Under a recent U.S. Food and Drug Administration (FDA) standard for food contaminants, 3.5 ounces of tomato sauce can have up to 30 fly eggs, and 11 ounces of wheat flour can contain 450 insect fragme...