What price do farmers get for their watermelon crops? In the third week of July, a...

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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 = $6.88 per 100 pounds of watermelon.Assume that ? is known to be $1.94 per 100 pounds.
(a) Find a 90% confidence interval for the population mean price(per 100 pounds) that farmers in this region get for theirwatermelon crop. What is the margin of error? (Round your answersto two decimal places.)
lower limit     $
upper limit     $
margin of error     $

(b) Find the sample size necessary for a 90% confidence level withmaximal error of estimate E = 0.41 for the mean price per100 pounds of watermelon. (Round up to the nearest wholenumber.)
farming regions

(c) A farm brings 15 tons of watermelon to market. Find a 90%confidence interval for the population mean cash value of thiscrop. What is the margin of error? Hint: 1 ton is 2000pounds. (Round your answers to two decimal places.)
lower limit     $
upper limit     $
margin of error     $

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4.1 Ratings (596 Votes)

given dataaresample size n 41sample mean 688per 100 poundspopulation sd 194 per 100poundsa for 90 confidenceinterval we get from z table for 90 confidence interval so margin of See Answer

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