Questions from Business Statistics

Q: Here are the same histograms as in Exercise 7. However,

Here are the same histograms as in Exercise 7. However, the two groups of fatalities have been highlighted, and the corresponding bars in the Year histogram are also highlighted. 1. How many years are...

Q: A study of body fat on 250 men collected measurements of 12

A study of body fat on 250 men collected measurements of 12 body parts as well as the percentage of body fat that the men carried. Here is a dot plot of their bicep circumferences (in inches). What do...

Q: The Pew Research Center asked 2143 U.S. adults and

The Pew Research Center asked 2143 U.S. adults and 1055 college presidents to rate the job the higher education system is doing in providing value for the money spent by students and their families as...

Q: In a random sample of U.S. adults surveyed in

In a random sample of U.S. adults surveyed in December 2011, Pew Research asked how important it is to you personally to be successful in a high-paying career or profession. Here is a table reporting...

Q: It has become common for shoppers to comparison shop using the Internet

It has become common for shoppers to comparison shop using the Internet. Respondents to a Pew survey in 2013 who owned cell phones were asked whether they had, in the past 30 days, looked up the price...

Q: Consider the survey data in Exercise 1. 1. What

Consider the survey data in Exercise 1. 1. What is the conditional distribution (in percents) of college presidents opinions about the value of college? 2. Find the conditional distribution of the opi...

Q: 1. Find the conditional distribution (in percent’s) of income

1. Find the conditional distribution (in percent’s) of income distribution for those who do not cyber compare prices. 2. Find the conditional distribution (in percent’s) of incomes for shoppers who do...

Q: The A survey of 299 undergraduate students from Exercise 86 in Chapter

The A survey of 299 undergraduate students from Exercise 86 in Chapter 2 (data in Student survey) asked about respondents diet preference (Carnivore, Omnivore, Vegetarian) and political alignment (Lib...

Q: Here are the same data as in Exercise 5 but displayed differently

Here are the same data as in Exercise 5 but displayed differently: 1. Describe what this plot shows using the concept of a conditional distribution. 2. Do you think the differences here are real? Expl...

Q: The table below shows the number of licensed U.S.

The table below shows the number of licensed U.S. drivers (in millions) by age and by sex in 2014. (www.fhwa.dot.gov/policyinformation/statistics.cfm) 1. What percent of total drivers are under 20? 2....