# Question: Construct a 95 confidence interval for the average value of

Construct a 95% confidence interval for the average value of y for Problem 12.6. Use x =25.

## Answer to relevant Questions

Construct a 90% prediction interval for a single value of y for Problem 12.7; use x = 100. Construct a 90% prediction interval for a single value of y for Problem 14.2; use x = 130. Compare the results. Which prediction ...After a somewhat uncertain start, e-commerce sales in the United States have been growing for the past several years. Shown below are quarterly adjusted e-commerce sales figures ($ billions) released by the Census Bureau for ...A manager of a car dealership believes there is a relationship between the number of salespeople on duty and the number of cars sold. Suppose the following sample is used to develop a simple regression model to predict the ...Is the amount of money spent by companies on advertising a function of the total revenue of the company? Shown are revenue and advertising cost data for nine companies published by Advertising Age.Use the data to develop a ...Study the following Minitab residual diagnostic graphs. Comment on any possible violations of regressionassumptions.Post your question