In a sample of 25, the mean is = 86.92 with a standard deviation of s = 9.87. Assuming the results follow a normal distribution, construct the 90% confidence interval for the population mean. The t Table = 1.711. A) 90% confidence interval is 86.92± 3.68. B) 90% confidence interval is 90.30. C) 90% confidence interval is between 83.54 and 90.30. D) 90% confidence interval is 86.82± 1.711.

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In a sample of 25, the mean is = 86.92 with a standard deviation of s = 9.87. Assuming the results follow a normal distribution, construct the 90% confidence interval for the population mean. The t Table = 1.711. A) 90% confidence interval is 86.92± 3.68. B) 90% confidence interval is 90.30. C) 90% confidence interval is between 83.54 and 90.30. D) 90% confidence interval is 86.82± 1.711.

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