Question: 1. A soft-drink machine is regulated so that the amount of drink dispensed is approximately normally distributed with a standard deviation equal to 0.53 ounces.

1. A soft-drink machine is regulated so that the amount of drink dispensed is approximately normally distributed with a standard deviation equal to 0.53 ounces. Find a 99% confidence interval for the mean of all drinks dispensed by this machine if a random sample of 36 drinks has an average content of 7.94 ounces. a. (7.94-qnorm(1.99/2)*0.53, 7.94+gnorm(1.99/2)*0.53) b. (7.94-qnorm(1.99/2)*0.53/(36), 7.94+qnorm(1.99/2)*0,53/(36)) c. (7.94-qnorm(0.99/2)*0.53/ (36), 7.94+qnorm(0.99/2)*0.53/V(36)) d. (7.94-9t(0.99/2)*0.53/ (36), 7.94+qt(0.99/2)*0.53/(36)) Choose a for Question 2-5

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