Two types of plastics are suitable for use by an electronics component manufacturer. The breaking strength of these plastics is very important. From a random sample size of n1=18, and n2=16, we obtained that X1-bar=151.2, S1=1.4 and X2-bar=152.3, S2=1.65.
Calculate a 95% confidence interval on the ratio of variances.
With 95% confidence, what is the left-value of the two-sided confidence interval on the ratio of variances?
Your Answer:
Lower Limit =
Upper Limit =
95% Confidence interval is ( 0.2562 , 1.9582 )
( 0.2562 <
< 1.9582 )
Left value = 0.2562
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