Questions from Essentials of Statistics

Q: The probability is 0.314 that the gestation period of a

The probability is 0.314 that the gestation period of a woman will exceed 9 months. In six human births, what is the probability that the number in which the gestation period exceeds 9 months is a. ex...

Q: The National Safety Council publishes information about automobile accidents in Accident Facts

The National Safety Council publishes information about automobile accidents in Accident Facts. According to that document, the probability is 0.40 that a traffic fatality will involve an intoxicated...

Q: From the Florida State Center for Health Statistics report Women and Cardiovascular

From the Florida State Center for Health Statistics report Women and Cardiovascular Disease Hospitalization, we obtained the following table showing the number of female hospitalizations for cardiovas...

Q: A student takes a multiple-choice exam with 10 questions,

A student takes a multiple-choice exam with 10 questions, each with four possible selections for the answer. A passing grade is 60% or better. Suppose that the student was unable to find time to study...

Q: J. Fetto, in the article “Love Stinks” (

J. Fetto, in the article “Love Stinks” (American Demographics, Vol. 25, No. 1, pp. 10–11), reports that Americans split with their significant other for many reasons—including indiscretion, infidelity...

Q: A poll commissioned by Friends of the Earth and conducted by the

A poll commissioned by Friends of the Earth and conducted by the Mellman Group found that 72% of American voters are in favor of a carbon tax. Suppose that six voters in the United States are randomly...

Q: In the early part of 2005, the Terri Schiavo case received

In the early part of 2005, the Terri Schiavo case received national attention as her husband sought to have life support removed, and her parents sought to maintain that life support. The courts allow...

Q: A pathological video game user (PVGU) is a video game

A pathological video game user (PVGU) is a video game user that averages 31 or more hours a week of gameplay. According to the article “Pathological Video Game Use among Youths: A Two-Year Longitudina...

Q: Apply the empirical rule to solve each exercise. The data

Apply the empirical rule to solve each exercise. The data set has 150 observations and has mean 35 and standard deviation 4. Approximately how many observations lie between 31 and 39?

Q: In the Scientific American article “Reducing Crime: Rehabilitation is Making

In the Scientific American article “Reducing Crime: Rehabilitation is Making a Comeback,” R. Doyle examined rehabilitation of felons. One aspect of the article discussed recidivism of juvenile prisone...