Multiple Choice
A sample of 21 elements is selected to estimate a 90% confidence interval for the variance of the population. The χ2 value(s) to be used for this interval estimation is(are) _____.
A) -1.96 and 1.96
B) 12.443
C) 10.851 and 31.410
D) 12.443 and 28.412
Correct Answer:
Verified
Correct Answer:
Verified
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