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

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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