Questions from Business Statistics

Q: How many points do football teams score in the Super Bowl?

How many points do football teams score in the Super Bowl? Here are the total numbers of points scored by both teams in each of the first 50 Super Bowl games. (Data in Super Bowl 2016) 45, 47, 23, 30,...

Q: In the Super Bowl, by how many points does the winning

In the Super Bowl, by how many points does the winning team outscore the losers? Here are the winning margins for the first 50 Super Bowl games. (Data in Super Bowl 2016) 25, 19, 9, 16, 3, 21, 7, 17,...

Q: Test scores from a large calculus class of 400 are shown in

Test scores from a large calculus class of 400 are shown in the histogram below 1. Describe the distribution of scores. What might account for this shape? 2. Why might both the mean and median score b...

Q: Test scores from a calculus section of 40 students are shown in

Test scores from a calculus section of 40 students are shown in the histogram below.  Describe the distribution of scores. Why might you be less sure of the description of the shape as compared to th...

Q: A clerk entering salary data into a company spreadsheet accidentally put an

A clerk entering salary data into a company spreadsheet accidentally put an extra “0” in the boss salary, listing it as $2,000,000 instead of $200,000. Explain how this error will affect these sum...

Q: During contract negotiations, a company seeks to change the number of

During contract negotiations, a company seeks to change the number of sick days employees may take, saying that the annual average is 7 days of absence per employee. The union negotiators counter that...

Q: The following table summarizes 1529 films from 2014 and 2015 that have

The following table summarizes 1529 films from 2014 and 2015 that have been classified into a genre and have a MPAA rating. (Data from Movies 06-15) 1. What percent of these films were rated R? 2. Wha...

Q: Examine the table about ethnicity and acceptance for the Houston Independent School

Examine the table about ethnicity and acceptance for the Houston Independent School District magnet schools program, shown in Exercise 35. Does it appear that the admissions decisions are made indepen...

Q: Consider the relationship between the life expectancy (in years) and

Consider the relationship between the life expectancy (in years) and the illiteracy rate (per hundred people) in the 50 U.S. states plus Washington, DC. A linear model is run and the output is present...

Q: Which type of study is this? 1. A prospective

Which type of study is this? 1. A prospective observational study because it followed the maids for four weeks. 2. A retrospective observational study because at the end of four weeks, the researcher...