Questions from Business Statistics

Q: US News and World Report publishes a special issue on many U

US News and World Report publishes a special issue on many U.S. colleges and universities. The scatterplots have Student/Faculty Ratio (number of students per faculty member) for the colleges and univ...

Q: Continue your analysis of the manatee situation from Exercise R2.8

Continue your analysis of the manatee situation from Exercise R2.8. 1. Create a linear model of the association between Manatee Deaths and Powerboat Registrations. 2. Interpret the slope of your model...

Q: As a class project, students in a large statistics class collected

As a class project, students in a large statistics class collected publicly available information on recent home sales in their hometowns. There are 894 properties. Important predictors of the price o...

Q: For the real estate data of the previous exercise, consider the

For the real estate data of the previous exercise, consider the value of the number of bedrooms in modeling the price of a home. The correlation between Price and Bedrooms is 0.116. Here is a regressi...

Q: In Chapter 8 we learned about the extraordinary depth and duration of

In Chapter 8 we learned about the extraordinary depth and duration of the dives taken by penguins. In that chapter we modeled We can model a re-expression of Heart rate with the Duration (min) of dive...

Q: We looked at the data on life expectancy in different countries as

We looked at the data on life expectancy in different countries as they related to the (square root of the) number of doctors and to the (square root of the) number of TVs. Here a regression using bot...

Q: Exercise R2.9 fit a regression model to the relationship between

Exercise R2.9 fit a regression model to the relationship between BCI and pH in streams sampled in the Adirondack Mountains. More variables are available. For example, scientists also recorded the wate...

Q: A statistics instructor created a linear regression equation to predict students final

A statistics instructor created a linear regression equation to predict students final exam scores from their midterm exam scores. The regression equation was Fin=10+0.9 Mid. 1. If Susan scored a 70 o...

Q: Highway planners investigated the relationship between traffic Density (number of automobiles

Highway planners investigated the relationship between traffic Density (number of automobiles per mile) and the average Speed of the traffic on a moderately large city thoroughfare. The data were coll...

Q: One Thursday, researchers gave students enrolled in a section of basic

One Thursday, researchers gave students enrolled in a section of basic Spanish a set of 50 new vocabulary words to memorize. On Friday, the students took a vocabulary test. When they returned to class...