Questions from Statistics Principles

Q: Our number system consists of the digits 0, 1, 2

Our number system consists of the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. The first significant digit in any number must be 1, 2, 3, 4, 5, 6, 7, 8, or 9 because we do not write numbers such as 12 as...

Q: Refer to Problem 13. The distribution in the next column lists

Refer to Problem 13. The distribution in the next column lists the first digit of the surface area (in square miles) of 335 rivers. Is there evidence at the  = 0.05 level of significance to support...

Q: The National Highway Traffic Safety Administration publishes reports about motorcycle fatalities and

The National Highway Traffic Safety Administration publishes reports about motorcycle fatalities and helmet use. The distribution shows the proportion of fatalities by location of injury for motorcycl...

Q: Is the religious make-up of the United States Congress reflective

Is the religious make-up of the United States Congress reflective of that in the general population? The following table shows the religious affiliation of the 535 members of the 116th Congress along...

Q: Write a survey question that contains strong wording and one that contains

Write a survey question that contains strong wording and one that contains tempered wording. Post each question in an online survey site such as StatCrunch, surveymonkey.com, or polldaddy.com. Adminis...

Q: Does the location of your seat in a classroom play a role

Does the location of your seat in a classroom play a role in attendance or grade? To answer this question, professors randomly assigned 400 students* in a general education physics course to one of fo...

Q: On January 1, 2004, it became mandatory for all police

On January 1, 2004, it became mandatory for all police departments in Illinois to record data pertaining to race from every traffic stop. Mundelein, Illinois, has been collecting data since 2000. Rath...

Q: In his book Outliers, Malcolm Gladwell claims that more hockey players

In his book Outliers, Malcolm Gladwell claims that more hockey players are born in January through March than in October through December. The following data show the number of players in the Natio...

Q: A researcher wanted to determine whether bicycle deaths were uniformly distributed over

A researcher wanted to determine whether bicycle deaths were uniformly distributed over the days of the week. She randomly selected 200 deaths that involved a bicycle, recorded the day of the week on...

Q: Do people cheat or lie when the cheating or lying is not

Do people cheat or lie when the cheating or lying is not easy to identify (such as filing of taxes)? A total of 2568 college-aged subjects from various countries throughout the world rolled a singl...