In order to compare the satisfaction of customers of 2 competitor companies of , 174 customers...

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In order to compare the satisfaction of customers of 2competitor companies of , 174 customers of company A and 355customers of company B were chosen randomly. Customers wererequired to rate the companies from level 1 (least satisfaction) to5 (maximum satisfaction). The results are included below. Checkwhether the difference in the mean level of customers' satisfactionof the two companies is statistical important at 1%. The resultsare included below:
Company AÂ Â Company B
Sample SizeÂ Â 174Â Â 355
Sample meanÂ Â 3.51Â Â 3.24
Sample Standard Deviation (S)Â Â 0.51Â Â 0.52

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3.9 Ratings (440 Votes)

Given Company A Company BSample Size 174 355Sample mean 351 324Sample SD 051 052Level of significant for test 001 1Hypothesis to be testedH0 mean See Answer

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