A random sample of 21 chocolate energy bars of a certain brand has, on average, 270 calories per bar, with a standard deviation of 15 calories. Assume that the distribution of the calorie content is...

Extracted text: A random sample of 21 chocolate energy bars of a certain brand has, on average, 270 calories per bar, with a standard deviation of 15 calories. Assume that the distribution of the calorie content is approximately normal. Construct a 90% confidence interval for o. Click here to view page 1 of the table of critical values of the chi-squared distribution. Click here to view page 2 of the table of critical values of the chi-squared distribution. The confidence interval isD<>< (round="" to="" two="" decimal="" places="" as="">