The sample proportion is a point estimate of the population mean A. True B. Fals

Question

The sample proportion is a point estimate of the population mean A. True B. False. 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 x = $7.08 per 100 pounds of watermelon. Assume that sigma 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. a) $ 6.83 to $ 7.33 per 100 pounds b) $ 6.93 to $ 5.93 per 100 pounds c) $ 6.43 to $ 7.73 per 100 pounds d) $ 6.99 to $ 7.17 per 100 pounds e) $ 6.89 to $ 7.27 per 100 pounds

Explanation / Answer

7) option A is correct

8)std error =std deviation/(n)1/2 =0.252

for 99% CI, z=2.326

hence confidence interval =mean -/+ z*std error =6.43 to 7.73

option c is correct

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