4. [48.33 Points] DETAILS BBBASICSTATSACC B.1.01B.Ml. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER 1What price do farmers get for their watermelon crops? In the third week ofJuiy. a random sample of 44 farming regions gave a sample mean of E = $6.88 per 100 pounds of watermelon. Assume that o is known to be $1.98 per 100 pounds. (a) Find a 90% condence interval for the population mean price {per 100 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 necessar'ilr for a 90% condence level with maximal error of estimate E = 0.3? for the mean price per 100 pounds of watermelon. (Enter a number. Round up to the nearest whole number.) |:|farming regions (c) it farm brings 15 tons of watermelon to market. Find a 90% condence interval for the population mean cash value of this crop {in dollars). What is the margin of error (in dollars)? Hint: 1 ton is 2000 pounds. (For each answer, enter a number. Round your answers to two decimal places.) lower limit $ upper limit $ margin of error it