19. {16.25 Points} DETAILS BBBASICSTATSACC 8.1.018.Ml. MY NOTES ASK YOUR TEACHER _ What price do farmers get for their watermelon crops? In the third week of July, a random sample of 43 forming gave a sample mean of x - $6.38 per 100 pounds of watermelon. Assume that a is kn regions own to be $1.94 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 cup (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 $ l margin of error 3 . hr (b) Find the sample size necessary for 90% condence level with maximal error of estimate E n 0.43 for the mean price per 100 pounds of watermelon. (Enter a number. Round up to the nearest whole number.) E farming regions / (c) A farm brings 15 tons of watermelon to market. nd 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; i enter a number. Round your answers to two dedmal places.) / lower limit 3' . upper limit $ i margin of error 3