A company sold 40 lb bags of dog food. The standard deviation is 14 ounces. a sample of 30 bags was done. 40. 38, 42, 41, 39, 42, 41, 43, 41, 37 41,39, 39, 37, 40, 39, 43, 41, 39, 41 42, 37, 39, 40, 38, 38, 37, 38, 41, 39 a} using alpha = 0.05, determine if the lling process is performing properly. Show calculations. See formulas on page 520 b) Interpret the p-value using excel. See page 620