What price do farmers get for their watermelon crops? In thethird week of July, a random sample of 41 farming regions gave asample mean of x bar = $6.88 per 100 pounds of watermelon. Assumethat ? is known to be $1.92 per 100 pounds. (a) Find a 90%confidence interval for the population mean price (per 100 pounds)that farmers in this region get for their watermelon crop (indollars). What is the margin of error (in dollars)? (For eachanswer, enter a number. Round your answers to two decimal places.)lower limit $ upper limit $ margin of error $ (b) Find the samplesize necessary for a 90% confidence level with maximal error ofestimate E = 0.39 for the mean price per 100 pounds of watermelon.(Enter a number. Round up to the nearest whole number.) farmingregions (c) A farm brings 15 tons of watermelon to market. Find a90% confidence interval for the population mean cash value of thiscrop (in dollars). What is the margin of error (in dollars)? Hint:1 ton is 2000 pounds. (For each answer, enter a number. Round youranswers to two decimal places.) lower limit $ upper limit $ marginof error $
