# Question

Refer to Exercise 11.7. Perform a statistical test of the null hypothesis that there is no linear relationship between the concentration of pectin and the firmness of canned sweet potatoes after 30 days of storage at 25° C. Give the p- value for this test and draw conclusions.

In exercise

In exercise

## Answer to relevant Questions

Refer to the data of Exercise 11.8. a. Calculate a 95% confidence interval for β1. b. What is the interpretation of H0: β1 = 0 in Exercise 11.8? c. What is the natural research hypothesis Ha for the problem in Exercise ...Refer to Exercise 11.1. a. Plot the equation ŷ = .51 + 1.38x in the scatterplot produced in Exercise 11.1. Comment on how close this line is to the line you fitted through the points. b. Use the equation ŷ = .51 + 1.38x to ...Refer to Exercise 11.24. a. For this study, would it make sense to give any physical interpretation to β0? b. Place a 95% confidence interval on β0, and give an interpretation to the interval relative to this particular ...Refer to Exercise 11.32. a. Determine the 95% confidence bands for E(y) when 4 ≤ x ≤ 7. b. Determine the 95% prediction bands for y, 4 ≤ x ≤ 7. c. Distinguish between the meaning of the confidence bands and the ...Refer to Exercise 11.40. Conduct a test for lack of fit of the linear regression model. In exercisePost your question

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