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In the third week of July, a random sample of 40 farming regions gave a sample mean of $6.88 per 100 pounds of watermelon. Assume
In the third week of July, a random sample of 40 farming regions gave a sample mean of $6.88 per 100 pounds of watermelon. Assume that the population standard deviation is known to be $1.92 per 100 pounds. Find a 90% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their watermelon crop
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