What price do farmers get for their watermelon crops? In the third week of July, a random sample of 51 farming regions gave a sample mean of = $7.08 per 100 pounds of watermelon. Assume that is known to be $1.80 per 100 pounds. Find a 99% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their watermelon crop. Round your answer to the nearest cent.

Question

What price do farmers get for their watermelon crops? In the third week of July, a random sample of 51 farming regions gave a sample mean of    = $7.08 per 100 pounds of watermelon. Assume that  is known to be $1.80 per 100 pounds. Find a 99% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their watermelon crop. Round your answer to the nearest cent.
Answer   
  a. $6.93 to $5.93 per 100 pounds 
  b. $6.89 to $7.27 per 100 pounds 
  c. $6.99 to $7.17 per 100 pounds 
  d. $6.83 to $7.33 per 100 pounds 
  e. $6.43 to $7.73 per 100 pounds

PsyDAG · Answer

99% = mean ± 2.575 SEm SEm = SD/√n It would help if you proofread your questions before you posted them. "Assume that is known to be $1.80 per 100 pounds."?