<p>In a sample of 60, the mean is 
= 76.29 with a standard deviation of s = 7. Assuming the results follow a normal distribution, construct the 90% confidence interval for the population mean. The t Table = 1.684.
A) 90% confidence interval is 76.29± 1.52
B) 90% confidence interval is 77.97.
C) 90% confidence interval is between 74.61 and 77.97.
D) 90% confidence interval is 76.29± 1.684.
Correct Answer:
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