# Question: Refer to the data given in Exercise 13 97 on the

Refer to the data given in Exercise 13.97 on the number of times a specific product is promoted on the intercom system in a supermarket and the number of units of that product sold. Make a 90% confidence interval for the mean number of units of that product sold on days with 35 promotions. Construct a 90% prediction interval for the number of units of that product sold on a randomly selected day with 35 promotions.

## Answer to relevant Questions

Refer to the data given in Exercise 13.98 on the living area (in square feet) and price (in thousands of dollars) of 10 randomly selected houses listed for sale in a city. Construct a 98% confidence interval for the mean ...It seems reasonable that the more hours per week a full-time college student works at a job, the less time he or she will have to study and, consequently, the lower his or her GPA would be. a. Assuming a linear relationship, ...Plot the following straight lines. Give the values of the y-intercept and slope for each of these lines and interpret them. Indicate whether each of the lines gives a positive or a negative relationship between x and y. a. y ...A researcher took a sample of 10 years and found the following relationship between x and y, where x is the number of major natural calamities (such as tornadoes, hurricanes, earthquakes, floods, etc.) that occurred during a ...A population data set produced the following information. N = 460, ∑x = 3920, ∑y = 2650, ∑xy = 26,570 ∑x2 = 48,530, and ∑y2 = 39,347 Find the values of σe and p2.Post your question