Question

= AND DISTRIBUTIONS Central limit theorem: Sample mean The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an average (mean) of 1.75 pounds with a standard deviation of 1.02 pounds. In a recent study, a group of 50 people who used this pill were interviewed. The study revealed that these people lost a mean of 1.7 pounds after one week. If the producer's claim is correct, what is the probability that the mean weight loss after one week on this pill for a random sample of 50 individuals will be 1.7 pounds or less? Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places. 0 х 5 ?

Answer 1

Here we have n =50 Standard deviahoo - 1:02 Mean () - 1.75 Plx< 1.7) = P1 X-4 1.7 -1.75 own 102/150 VI = P125-0:35) = 0.363169 = 10.363 Round to three decimal Places Since the Pvalue is not loss than 0.05 89 the Producer's claim is not correct.