Questions from Business Statistics

Q: Healthy eating probably doesn’t include hot dogs, but if you are

Healthy eating probably doesn’t include hot dogs, but if you are going to have one, you’d probably hope it low in both calories and sodium. Recently, Consumer Repor...

Q: Does a person cholesterol level tend to change with age? Data

Does a person cholesterol level tend to change with age? Data collected from 1406 adults aged 45 to 62 as part of the Framingham study produced the regression analysis shown. Assuming that the data sa...

Q: Look again at Exercise 27 regression output for the calorie and sodium

Look again at Exercise 27 regression output for the calorie and sodium content of hot dogs. 1. The output reports s=59.66. Explain what that means in this context. 2. What the value of the standard er...

Q: Look again at Exercise 28 regression output for age and cholesterol level

Look again at Exercise 28 regression output for age and cholesterol level. (Data in Framingham) 1. The output reports s = 46.16. Explain what that means in this context. 2. What the value of the stand...

Q: Based on the regression output seen in Exercise 27, create a

Based on the regression output seen in Exercise 27, create a 95% confidence interval for the slope of the regression line and interpret your interval in context.

Q: Here is a mosaic plot of the data on Diet and Politics

Here is a mosaic plot of the data on Diet and Politics from Exercise 5 combined with data on Gender. 1. Are there more men or women in the survey? Explain briefly. 2. Does there appear to be an associ...

Q: Based on the regression output seen in Exercise 28, create a

Based on the regression output seen in Exercise 28, create a 95% confidence interval for the slope of the regression line and interpret it in context.

Q: Chapter 8, Exercises 42, 44, and 49, looked

Chapter 8, Exercises 42, 44, and 49, looked at the how the age at first marriage has changed over time for men and women. One trend was that people have been waiting until they are older to get marrie...

Q: On January 22, 2017, www.autotrader.com listed

On January 22, 2017, www.autotrader.com listed 55 used Honda Civics for sale by owner. Here a scatterplot of the asking price vs. the number of miles on the odometer (in thousands): 1. Do you think a...

Q: Based on the analysis of marriage ages given in Exercise 33,

Based on the analysis of marriage ages given in Exercise 33, find a 95% confidence interval for the rate at which the age gap is closing. Explain what your confidence interval means