Test:Statistics Final Examination Time Remaining: 01 24:55 Submit Test This Ques

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Test:Statistics Final Examination Time Remaining: 01 24:55 Submit Test This Question: 1 pt 18 of 25 (1 complete) This Test: 25 pts possible Asingle random sample from a poplation with a normal dstribution of 109 body temperatures hasi98.50"F rs.oerF. Constt a 99% contdence iw -esinalt d te st rdamdeation d body emperature of all healthy humans, Is it safe to conclude that the population standard deviation is less than 1.50 F? ick the oon to view the table of Chi-Square critical values Round to two decimal pliaces as needed.) is it safe to conclude that the popuiation standard deviation is less than 1.50 F O A. This conclusion is not safe because 1.50*F is in the confidence interval O B. This condlusion is not safe because 1.50 F is outside the confidence O C. This conclusion is safe because 1.50 F is outside the confidence interval OD, Thicondision is safe because 1 50eF isito corfderce rtena. Click to select your answerls) 7 9 6 2 3

Explanation / Answer

The 99% confidence interval is [0.54, 0.76]

Option (C).

n = 109 s^2 = 0.3969 = 0.01 2 73.8989 149.5994 LCL for Variance = (n - 1) * s^2 /Right 2   0.2865 UCL for Variance = (n - 1) * s^2 /Left2 0.5801 LCL for SD = (LCL for Variance) = 0.5353 UCL for SD = (UCL for Variance) = 0.7616

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