1. A certain manufactured product is supposed to contain 23% potassium by weight. A sample of 10 specimens of this product had an average percentage of 23.2 with a standard deviation of 0.17%. If the mean percentage is found to differ from 23, the manufacturing process will be recalibrated. a. State the appropriate null and alternative hypotheses. b. Compute the test statistic. c. Should be the process be recalibrated? Explain. d. What assumption(s) you made in part (b) regarding the weight percentages of potassium?