What price do farmers get for their seedless watermelon crops? In a recent month, a simple random sample of 32 farming regions gave a sample mean of $12.15 per 100 pounds of seedless watermelon. Assumer that σ=$1.57σ=$1.57 per 100 pounds. Find a 90% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their seedless watermelon crop. (Round answers to two decimal places.) margin of error: $ per 100 pounds lower limit: $ per 100 pounds upper limit: $ per 100 pounds What conditions were met for the above calculations to be valid? (Select all that apply.) σσ is known  The price per 100 pound of seedless watermelon needs to be normally distributed large enough sample size n σσ is unknown The price per 100 pound of seedless watermelon needs to be uniformly distributed

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What price do farmers get for their seedless watermelon crops? In a recent month, a simple random sample of 32 farming regions gave a sample mean of $12.15 per 100 pounds of seedless watermelon. Assumer that σ=$1.57σ=$1.57 per 100 pounds.

Find a 90% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their seedless watermelon crop. (Round answers to two decimal places.)

margin of error: $ per 100 pounds

lower limit: $ per 100 pounds

upper limit: $ per 100 pounds

What conditions were met for the above calculations to be valid? (Select all that apply.)
  • σσ is known
  •  The price per 100 pound of seedless watermelon needs to be normally distributed
  • large enough sample size n
  • σσ is unknown
  • The price per 100 pound of seedless watermelon needs to be uniformly distributed


Find the sample size necessary for a 90% confidence level with an margin of error E=0.35E=0.35 for the mean price per 100 pounds of seedless watermelon. (Increase to the next whole number.) 

If a farmer brings in 10 tons of seedless watermelon to a market, find a 90% confidence interval for the population mean cash value for 10 tons of seedless watermelon. Note: 1 ton = 2000 pounds. (Round your answers to two decimal places.)

lower limit: $
upper limit: $
 
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