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13. Find the value of the computed test statistic. a. -4.743 b. 1.24 c. -1.23 d. -4.347 14. What would be the decision based on the computed test statistic? a. Reject the null hypothesis. b. Fail to reject the null hypothesis. c. Accept the null hypothesis. d. Reject both null and alternative hypothesis. 15. Based on the decision, what is the appropriate conclusion? a. Therefore, the average net weight of the powdered milk cans is less than 250 grams. b. Therefore, the average net weight of the powdered milk cans is at most 250 grams. c. Therefore, the average net weight of the powdered milk cans is at least 250 grams. d. Therefore, the average net weight of the powdered milk cans is indeed true or 250 grams.A. Multiple Choice. Encircle the letter that corresponds to the best answer. A brand of powdered milk is advertised as having a net weight of 250 grams. A curious consumer obtained the net weight of 10 randomly selected cans. The values obtained are: 245, 248, 242, 245, 246, 248, 250, 245, 243 and 249 grams. Is there reason to believe that the average net weight of the powdered milk cans is less than 250 grams at 5% level of significance? Assume the net weight is normally distributed with unknown population variance. 1. What is the appropriate null hypothesis? a. The average net weight of the powdered milk cans is less than 250 grams. b. The average net weight of the powdered milk cans is at most 250 grams. c. The average net weight of the powdered milk cans is at least 250 grams. d. The average net weight of the powdered milk cans is 250 grams 2. What is the symbol for null hypothesis? a. Ho: /