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13. [-/6.25 Points] DETAILS BBBASICSTATSACC 8.1.018,MI. What price do farmers get for their watermelon crops? In the third weele of July, a random sample of 27 farming regions gave a sample mean of x = $6.38 per 100 pounds of watermelon. Assume that o is known to be $2.08 per 100 pounds, (a) Find a 90% confidence interval for the population mean price (per ton pounds) that farmers in this region get for their watermelon crop (in dollars). What is the margin of error (in dollars)? (For each answer, enter a number Round your answers to two decimal places!) lower limit upper limit margin of error (b) Find the sample size necessary for a sdeb confidence level with maximal effor at eclimate Be0 da for the mean price per 100 pounds of watermelon. (Enter a number. Rou up to the nearest whole number farming regions () A farm brings 25 tons of watermelon to market, Find a shed confidence intervaltfor population mean cash value of this crop (in dollars). What is the margin of error (in dollars)? Hint: 1 ton 's 2000 pounds (For each answercentera numb answers to two decimal places.) lower limit upper limit margit of siror 2ACCA 2 008 5 MY NOTES ASK YOUR TEACHER 12:01 PM 6/27/2021