Question: A random sample of 20 acres gave a mean yield of wheat equal to 41.2 bushels per acre with a standard deviation of 3 bushels.

  1. A random sample of 20 acres gave a mean yield of wheat equal to 41.2 bushels per acre with a standard deviation of 3 bushels. Assuming that tpopulation distribution is rightward skewed, Construct a 90% confidence interval for the population mean. Draw graph

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