Questions from Essentials of Statistics


Q: Researchers M. Dhami et al. discussed how people adjust to

Researchers M. Dhami et al. discussed how people adjust to prison life in the article “Adaption to Imprisonment” (Criminal Justice and Behavior, Vol. 34, No. 8, pp. 1085–1100). A sample of 712 federal...

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Q: Refer to Problem 21. a. Find the margin of

Refer to Problem 21. a. Find the margin of error, E. b. Explain the meaning of E as far as the accuracy of the estimate is concerned. c. Determine the sample size required to have a margin of error of...

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Q: The paper “Correlations between the Intrauterine Metabolic Environment and Blood Pressure

The paper “Correlations between the Intrauterine Metabolic Environment and Blood Pressure in Adolescent Offspring of Diabetic Mothers” (Journal of Pediatrics, Vol. 136, Issue 5, pp. 587–592) by N. Cho...

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Q: In a Singapore edition of Business Times, diamond pricing was explored

In a Singapore edition of Business Times, diamond pricing was explored. The price of a diamond is based on the diamond’s weight, color, and clarity. A simple random sample of 18 one-half-carat diamond...

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Q: Wildfires are uncontrolled fires that usually spread quickly and are common in

Wildfires are uncontrolled fires that usually spread quickly and are common in wilderness areas that have long and dry summers. The National Interagency Fire Center reports statistics on wildfires on...

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Q: The convict surgeonfish is a common tropical reef fish that has been

The convict surgeonfish is a common tropical reef fish that has been found to delay metamorphosis into adults by extending its larval phase. This delay often leads to enhanced survivorship in the spec...

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Q: We have presented a “data scenario.” In each case,

We have presented a “data scenario.” In each case, decide which type of grouping (single-value, limit, or cutpoint) is probably the best? The additional sleep, to the nearest tenth of an hour, obtaine...

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Q: The U.S. Department of Energy collects fuel economy information

The U.S. Department of Energy collects fuel economy information on new motor vehicles and publishes its findings in Fuel Economy Guide. The data included are the result of vehicle testing done at the...

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Q: In the online article “Old Faithful at Yellowstone, a Bimodal

In the online article “Old Faithful at Yellowstone, a Bimodal Distribution,” D. Howell examined various aspects of the Old Faithful Geyser at Yellowstone National Park. Despite its name, there is cons...

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Q: The rare, booted eagle of western Europe was the focus of

The rare, booted eagle of western Europe was the focus of a study by S. Suarez et al. to identify optimal nesting habitat for this raptor. According to their paper “Nesting Habitat Selection by Booted...

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