Questions from Applied Statistics


Q: Suppose you want to know the ages of moviegoers who attend the

Suppose you want to know the ages of moviegoers who attend the latest Hunger Games movie. What kind of sample is it if you (a) survey the first 20 persons to emerge from the theater, (b) survey every...

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Q: Ergonomics is the science of making sure that human surroundings are adapted

Ergonomics is the science of making sure that human surroundings are adapted to human needs. How could statistics play a role in the following: a. Choosing the height of an office chair so that 95 pe...

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Q: (a) Use Excel to make a scatter plot of the

(a) Use Excel to make a scatter plot of the data for bottled water sales for 10 weeks, placing Price on the X-axis and Units Sold on the Y-axis. Add titles and modify the default colors, fonts, etc.,...

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Q: Calculate each Poisson probability: a. Fewer than 4

Calculate each Poisson probability: a. Fewer than 4 arrivals with λ = 5.8. b. At least 3 arrivals with λ = 4.8. c. At most 9 arrivals with λ = 7.0.

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Q: A recent study showed that women who lived near a freeway had

A recent study showed that women who lived near a freeway had an unusually high rate of rheumatoid arthritis. Sarah said, “They should move away from freeways.” Is there a fallacy in Sarah’s reasoning...

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Q: “Lacrosse helmets are not needed,” said Tom. “None

“Lacrosse helmets are not needed,” said Tom. “None of the guys on my team have ever had head injuries.” Is there a fallacy in Tom’s reasoning? Explain.

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Q: A European study of thousands of men found that the PSA screening

A European study of thousands of men found that the PSA screening for prostate cancer reduced the risk of a man’s dying from prostate cancer from 3.0 percent to 2.4 percent. “But it’s already a small...

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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.

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Q: A research study showed that adolescents who watched more than 4 hours

A research study showed that adolescents who watched more than 4 hours of TV per day were more than five times as likely to start smoking as those who watched less than 2 hours a day. The researchers...

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Q: A study of 40 U.S. cardiac care centers showed

A study of 40 U.S. cardiac care centers showed the following ratios of nurses to beds. (a) Prepare a dot plot. (b) Prepare a frequency distribution and histogram (you may either specify the bins yours...

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