Questions from Statistics Principles


Q: Suppose that you are in the market to purchase a car.

Suppose that you are in the market to purchase a car. You have narrowed it down to two choices and will let gas mileage be the deciding factor. You decide to conduct a little experiment in which you p...

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Q: You have received a year-end bonus of $5000.

You have received a year-end bonus of $5000. You decide to invest the money in the stock market and have narrowed your investment options down to two mutual funds. The following data represent the his...

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Q: Stocks may be categorized by sectors. Go to www.pearsonhighered

Stocks may be categorized by sectors. Go to www.pearsonhighered.com/sullivanstats and download 3_2_29 using the file format of your choice. The data represent the one-year rate of return (in percent)...

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Q: It is well known that San Diego has milder weather than Chicago

It is well known that San Diego has milder weather than Chicago, but which city has more deviation from normal temperatures? Use the following data, which represent the deviation from normal high temp...

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Q: The Stanford—Binet Intelligence Quotient (IQ) measures intelligence.

The Stanford—Binet Intelligence Quotient (IQ) measures intelligence. IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. (a) What percentage of people has an I...

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Q: SAT Math scores have a bell-shaped distribution with a mean

SAT Math scores have a bell-shaped distribution with a mean of 515 and a standard deviation of 114. Source: College Board. (a) What percentage of SAT scores is between 401 and 629? (b) What percentage...

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Q: The weight, in grams, of the pair of kidneys in

The weight, in grams, of the pair of kidneys in adult males between the ages of 40 and 49 has a bell- shaped distribution with a mean of 325 grams and a standard deviation of 30 grams. (a) About 95% o...

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Q: In a national survey on substance abuse, 13.3%

In a national survey on substance abuse, 13.3% of 12th graders reported using illicit drugs within the past month. Source: National Institute on Drug Abuse

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Q: The following information relates to the 2019 model year product line of

The following information relates to the 2019 model year product line of BMW automobiles.

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Q: The distribution of the length of bolts has a bell shape with

The distribution of the length of bolts has a bell shape with a mean of 4 inches and a standard deviation of 0.007 inch. (a) About 68% of bolts manufactured will be between what lengths? (b) What perc...

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