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A random sample of 15 health maintenance organizations (HMOs) was selected for each HMO, the co-payment (in dollars) for a doctor's office visit was recorded. The results are as follows, 52, 54, 58, 59, 56, 43, 59, 44, 29, 43, 59, 48, 60, 36,53 Send data to calculator Send data to Excel Under the assumption that co-payment amounts are normally distributed, find a 90% confidence interval for the mean co-payment amount in dollars. Give the lower limit and upper limit of the 90% confidence interval Carry your intermediate computations to at least three decimal places, Round your answers to one decimal place. (If necessary, consult a list of formulas) Lower limit: 0 ? Upper limit:

Seventy million pounds of trout are grown in the U.S. every year. Farm-raised trout contain an average (mean) of 32 grams of fat per pound, with a standard deviation of 8 grams of fat per pound. A random sample of 35 farm-raised trout is selected. The mean fat content for the sample is 30.2 grams per pound. Find the probability of observing a sample mean of 30.2 grams of fat per pound or less in a random sample of 35 farm-raised trout. Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places 0 х 5 ?