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(for items, 7 - 8) Edward owns a meat store and he wants to find out the average amount of his daily sale

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(for items, 7 - 8) Edward owns a meat store and he wants to find out the average amount of his daily sale. He randomly recorded his sales for 16 days and found the average to be P 8,500. It is known from last year's record that the standard deviation of his sales is P150 and a 99% level of confidence is to be used. ABCD 7. What is the sampling size in the given problem? OOO0 A. 150 B. 100 C. 50 D. 16 ABCD 8. What is the margin of error for his estimate? OOO0 A. 96.75 B. 58.7 C. 48.7 D. 38.7 ABCD 9. Given: n= 200, a = 35, and a 96% confidence level. Which 000 0 of the following values is the length of the confidence interval? A. 10.15 B. 14.54 C. 15.23 D. 18.25 ABCD 10. Given a sample size of 125 and a population standard 000 0 deviation of 88 having an 80% level of confidence. Which of the following values is the length of the confidence interval? A. 16.15 B. 18.15 C. 20.15 D. 24.15