5. ERP Company is a company Step 1: Formulate the null and alternative hypothesis. Given: that produces Brand A toothpaste H(o): and uses a machine to package 250 grams per tube. Assume that the net weight is normally distributed with a population H(a): standard deviation of 10 grams. A randomly selected 45 tubes of Brand A toothpaste have a mean weight of 255 grams. Is the packaging machine functioning Step 2: Level of Significance. properly? Test the claim / = 250 grams at 0.05 level of significance. Step 3: Test Statistic Step 4: Critical Values. Step 5: Decisions. Step 6: Conclusion/Interpretation