How well do airline companies serve their customers? A study showed the followin

Question

How well do airline companies serve their customers? A study showed the following ratings: 3% excellent, 28% good, 45% fair, 24% poor. In a follow-up study of service by telephone companies, assume that a sample of 400 adults found the following customer ratings 24 excellent, 124 good, 172 fair, 80 poor. Is the distribution of the customer different from the distribution of customer ratings for airlines companies? State the appropriate null and alternatives, hypothesis. H_0: Distribution of customer rating for telephone companies is not different that airline companies. AND H_a: Distribution of customer rating for telephone companies us different that airline companies H_0: Distribution of customer rating for telephone companies is different that airline companies, AND H_a: Distributions of customer rating for telephone companies is not different that airline companies H_0: Distribution of customer rating for telephone companies is independent of airline companies, AND H_a: Distribution of customer rating for telephone companies is dependent of airline companies H_0: Distribution of customer rating for telephone companies is dependent of airline companies, AND H_a: Distribution of customer rating for telephone companies is independent of airline companies.

Explanation / Answer

The null & alternative hypothesis is:

Ho : Distribution of customer rating for telephone companies is not different than airline companies & Ha: Distribution of customer rating for telephone companies is different than airline companies

Option a

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