15 pts D Question 14 Three different companies produce a particular type of elec

Question

15 pts D Question 14 Three different companies produce a particular type of electronic component. Randorm samples of components are selected from cach company. Components are put into actual use until they fail and the life time of the components noted are as shown. At aa -0.10, find the F test value. Is there a significant difference in the mean lifetime of the components of the different companies? Lifetime of components (in months) Company l Company 2 Company 3 S4 48 52 60 43 23 58 46 04 32 38 52 20.29, yes 2.7, yes 20.29, no

Explanation / Answer

The statistical software output for this problem is:

Analysis of Variance results:
Data stored in separate columns.

Column statistics

ANOVA table

Hence,

F - value = 20.29; Significant difference

Option A is correct.

Column n Mean Std. Dev. Std. Error Company 1 6 54.166667 6.9402209 2.8333333 Company 2 6 33.5 6.9209826 2.8254793 Company 3 6 53.833333 5.382069 2.1972205

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