Q2. To test the variability of two types of material used in electrical conduits, Strength of the two materials is measu
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Q2. To test the variability of two types of material used in electrical conduits, Strength of the two materials is measu
Q2. To test the variability of two types of material used in electrical conduits, Strength of the two materials is measured as follow: Year Material A Material B n 25 16 Sample 380 lb 370 lb mean strength Sample 100 400 variance 1. At a=0.2 level. Use the F table to determine The critical points for this two tailed f distribution 2. Assume equal variance, Calculate The pooled variance 3. Calculate the F-ratio
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