Questions from Essentials of Statistics

Q: In the paper “The Racial Crossover in Comorbidity, Disability,

In the paper “The Racial Crossover in Comorbidity, Disability, and Mortality” (Demography, Vol. 37(3), pp. 267–283), N. Johnson investigated the health of independent random samples of white and Afric...

Q: The National Highway Traffic Safety Administration collects data on seat-belt

The National Highway Traffic Safety Administration collects data on seat-belt use and publishes results in the document Occupant Restraint Use. Of 1000 drivers 16–24 years old, 79% said that they buck...

Q: Repeat parts (b)–(e) of Exercise 11.9

Repeat parts (b)–(e) of Exercise 11.9 for samples of size 3. Data from Exercise 11.9: This exercise involves the use of an unrealistically small population to provide a concrete illustration for the...

Q: Guns make unique markings on bullets they fire and their shell casings

Guns make unique markings on bullets they fire and their shell casings. These markings are called ballistic fingerprints. An ABCNEWS Poll examined the opinions of Americans on the enactment of a law “...

Q: Body mass index (BMI) is a measure of body fat

Body mass index (BMI) is a measure of body fat based on height and weight. According to the document Dietary Guidelines for Americans, published by the U.S. Department of Agriculture and the U.S. Depa...

Q: Apply Procedure to find the required confidence interval. Refer to

Apply Procedure to find the required confidence interval. Refer to Exercise 11.106 and determine and interpret a 98% confidence interval for the difference between the prostate cancer rates of men who...

Q: Apply Procedure to find the required confidence interval. Refer to

Apply Procedure to find the required confidence interval. Refer to Exercise 11.107 and determine and interpret a 98% confidence interval for the difference between the rates of major birth defects for...

Q: Apply Procedure to find the required confidence interval. Refer to

Apply Procedure to find the required confidence interval. Refer to Exercise 11.108 and find and interpret a 95% confidence interval for the difference between the stroke incidences of white and Africa...

Q: In the article, “Length of The Beatles’ Songs” (

In the article, “Length of The Beatles’ Songs” (Chance, Vol. 25, No. 1, pp. 30–33), T. Koyama discusses aspects and interpretations of the lengths of songs by The Beatles. Data on the length, in secon...

Q: Apply Procedure to find the required confidence interval. Refer to

Apply Procedure to find the required confidence interval. Refer to Exercise 11.109 and find and interpret a 99% confidence interval for the difference between the proportions of seat-belt users for dr...