# Question: Help Mr B the store manager in Exercises 13 77 13 79

Help Mr. B, the store manager in Exercises 13. 77–13.79 (and Exercises 12.44–12.46), by analyzing the relationship between the number of customers per day and the total daily sales for the data from the first 10 months of the year.

a. Use your calculator or computer to construct the scatter diagram for the data for January to October.

b. Describe the graphical evidence found and discuss the linearity. Are there any ordered pairs that appear to be different from the others?

c. What is the relationship between the number of customers per day and the total daily sales for the first 10 months of the year?

d. Is the slope of the regression line significant at a = 0.05?

e. Give the 95% prediction interval for the total daily sales that one would expect if the number of customers were 600.

a. Use your calculator or computer to construct the scatter diagram for the data for January to October.

b. Describe the graphical evidence found and discuss the linearity. Are there any ordered pairs that appear to be different from the others?

c. What is the relationship between the number of customers per day and the total daily sales for the first 10 months of the year?

d. Is the slope of the regression line significant at a = 0.05?

e. Give the 95% prediction interval for the total daily sales that one would expect if the number of customers were 600.

## Answer to relevant Questions

Compare the results obtained in Exercises 13. 78, 13.79, and 13. 92. Explain the similarities and differences. Why do you think the scatter diagram for number of items purchased and total sales shows less variability about ...Determine the critical value that would be used to test the null hypothesis for the following situations using the classical approach and the sign test: a. Ho: P(+) = 0.5 vs. Ha: P(+) = 0.5, with n = 18 and a = 0.05 b. Ho: ...A taste test was conducted with a regular beef pizza. Each of 133 individuals was given two pieces of pizza, one with a whole-wheat crust and the other with a white crust. Each person was then asked whether he or she ...Given the following data from group 1 and group 2: a. Combine the two datasets in ranked order. Compute the sum of the ranks for group 1, R1. Compute the sum of the ranks for group 2, R2. b. Compute the U score for each ...Determine the p-value that would be used to complete the following runs tests: a. Ho: The sequence of gender of customers coming into the gym was random; Ha: The sequence was not random; with n(A) = 10, n(B) = 12, and V = ...Post your question