What price do farmers get for their watermelon crops? In the third week of July, a random sample of 44 farming regions g

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What price do farmers get for their watermelon crops? In thethird week of July, a random sample of 44 farming regionsgave a sample mean of x = $6.97 per 100pounds of watermelon. Assume that 𝜎is known tobe $1.90 per 100 pounds.
(a) Find a 90% confidence interval for the population meanprice (per 100 pounds) that farmers in this region get for theirwatermelon crop. What is the margin of error? (Round your answersto two decimal places.)
(b) Find the minimal sample size necessary for a 90%confidence level with maximal error ofestimate E = 0.33 for the mean priceper 100 pounds of watermelon. (Round your answer to a wholenumber.) farming regions(c) A farm brings 13 tons of watermelon to market. Finda 90% confidence interval for the population mean cash valueof this crop. What is the margin oferror? Hint: 1 ton is 2000 pounds. (Round youranswers to the nearest dollar.)