2. What is the 90% confidence interval for the variance of exam scores for 28 algebra students, if the standard deviation of their last exam was 12.7?

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2. What is the 90% confidence interval for the variance of<br>exam scores for 28 algebra students, if the standard<br>deviation of their last exam was 12.7?<br>< 244.4 < 250.3<br>B) 235.4 < D) 232.4 <<br>< 245.8 < 248.8<br>B) 10.4 < D) 108.6 <<br>2< 316.5 2 < 312.7<br>2< 16.4<br>

Extracted text: 2. What is the 90% confidence interval for the variance of exam scores for 28 algebra students, if the standard deviation of their last exam was 12.7? < 244.4="">< 250.3="" b)="" 235.4="">< d)="" 232.4=""><>< 245.8="">< 248.8="" b)="" 10.4="">< d)="" 108.6=""><>< 316.5="" 2="">< 312.7=""><>

Jun 08, 2022
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