Questions from Business Statistics

Q: Using the results of the experiment described in Exercise 85 , does

Using the results of the experiment described in Exercise 85 , does it matter whether one listens to rap music while studying, or is it better to study without music at all? 1. Test an appropriate hyp...

Q: Some students do homework with music playing in their headphones. (

Some students do homework with music playing in their headphones. (Anyone come to mind?) Some researchers want to see if people can work as effectively with as without distraction. The researchers wil...

Q: Ads for many products use sexual images to try to attract attention

Ads for many products use sexual images to try to attract attention to the product. But do these ads bring people attention to the item that was being advertised? We want to design an experiment to se...

Q: Many people believe that students gain weight as freshmen. Suppose we

Many people believe that students gain weight as freshmen. Suppose we plan to conduct a study to see if this is true. 1. Describe a study design that would require a matched-pairs t-procedure to analy...

Q: Values for the labor force participation rate of women (LFPR)

Values for the labor force participation rate of women (LFPR) are published by the U.S. Bureau of Labor Statistics. We are interested in whether there was a difference between female participation in...

Q: Alsen, and Eden (Techno metrics 1975) report the results

Alsen, and Eden (Techno metrics 1975) report the results of trials in which clouds were seeded and the amount of rainfall recorded. The authors report on 26 seeded and 26 unseeded clouds in order of t...

Q: A professor (of something other than statistics!) distributed the following

A professor (of something other than statistics!) distributed the following histogram to show the distribution of grades on his 200-point final exam. Comment on the display.

Q: The British Medical Journal (1993; 307:1584) published

The British Medical Journal (1993; 307:1584) published an article titled, Is Friday the 13th Bad for Your Health? Researchers in Britain examined how Friday the 13th affects human behavior. One questi...

Q: The researchers in Exercise 15 also examined the number of people admitted

The researchers in Exercise 15 also examined the number of people admitted to emergency rooms for vehicular accidents on 12 Friday evenings (6 each on the 6th and 13th). Based on these data, is there...

Q: I After seeing countless commercials claiming one can get cheaper car insurance

I After seeing countless commercials claiming one can get cheaper car insurance from an online company, a local insurance agent was concerned that he might lose some customers. To investigate, he rand...