Questions from Statistics

Q: The following table in Exercise 2.30 shows the average life

The following table in Exercise 2.30 shows the average life span for some mammals in years, according to infoplease.com. Graph these average life spans and describe the distribution. What is a typical...

Q: The accompanying table also shows the gestation period (in days)

The accompanying table also shows the gestation period (in days) for some animals. The gestation period is the length of pregnancy. Graph the gestation period and describe the distribution. If there a...

Q: A StatCrunch survey asked people what they thought the maximum income tax

A StatCrunch survey asked people what they thought the maximum income tax rate should be in the United States. Make separate dotplots of the responses from Republicans and Democrats. If possible, put...

Q: The idea of sending delinquents to “Scared Straight” programs has

The idea of sending delinquents to “Scared Straight” programs has appeared recently in several media programs (such as Dr. Phil) and on a program called Beyond Scar...

Q: A StatCrunch survey asked people whether they preferred cats or dogs and

A StatCrunch survey asked people whether they preferred cats or dogs and how many pets they had. (Those who preferred both cats and dogs and those who preferred another type of pet are not included in...

Q: Data are shown for the cost of one year of law school

Data are shown for the cost of one year of law school at 30 of the top law schools in the United States in 2013. The numbers are in thousands of dollars. Make a histogram of the costs, pose a statisti...

Q: Recently, 115 users of StatCrunch were asked how many text messages

Recently, 115 users of StatCrunch were asked how many text messages they sent in one day. Make a histogram to display the distribution of the numbers of text messages sent, pose a statistical question...

Q: Data are available on the number of calories in 12 ounces of

Data are available on the number of calories in 12 ounces of beer for 101 different beers. Make a histogram to show the distribution of the numbers of calories, pose a statistical question, and descri...

Q: Data are available on the percent alcohol in 101 different beers.

Data are available on the percent alcohol in 101 different beers. Make a histogram of the data, pose a statistical question, and describe that distribution. (Source: beer100.com, accessed via StatCrun...

Q: The dot plot shown is for resting pulse rates of 125 people

The dot plot shown is for resting pulse rates of 125 people (according to NHANES, National Health and Nutrition Examination Survey). Many sources say the resting pulse should not be more than 100. a....