Refer to the data of Exercise 11.7. a. Calculate a 95% confidence interval for 0. b. What

Refer to the data of Exercise 11.7.
a. Calculate a 95% confidence interval for β0.
b. What is the interpretation of H0: β0 = 0 for the problem in Exercise 11.7?
c. Test the hypotheses H0: β0 = 0 versus Ha: β0 ‰  0.
d. Determine the p- value of the test of H0: β0 = 0.
In exercise

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0% 1% 2% 3% Pectin concentration Firmness reading 4690, 50.20, 51.30 56.48, 59.34, 6297 67.91,70.78, 73.67 6813, 70.85, 72.34