SOLUTION: How well do airline companies serve their customers? A study showed the following customer ratings: 3% excellent, 28% good, 45% fair, and 24% poor. In a follow-up study of service

Question 637798: How well do airline companies serve their customers? A study showed the following customer ratings: 3% excellent, 28% good, 45% fair, and 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, and 80 poor. Is the distribution of the customer ratings for telephone companies different from the distribution of customer ratings for airline companies? State the appropriate null and alternative hypothesis.
options:

H0: Distribution of customer rating for telephone companies is not different that airline companies. AND Ha: Distribution of customer rating for telephone companies is different that airline companies

H0:Distribution of customer rating for telephone companies is different that airline companies. AND Ha:Distribution of customer rating for telephone companies is not different that airline companies

H0:Distribution of customer rating for telephone companies is independent of airline companies. AND Ha:Distribution of customer rating for telephone companies is dependent of airline companies

H0:Distribution of customer rating for telephone companies is dependent of airline companies. AND Ha:Distribution of customer rating for telephone companies is independent of airline companies
Answer by reviewermath(1029) (Show Source): You can put this solution on YOUR website!
The correct answer is
H0: Distribution of customer rating for telephone companies is not different that airline companies.
AND Ha: Distribution of customer rating for telephone companies is different that airline companies
Num Categories: 4
Degrees of freedom: 3
Test Statistic, Chi Square: 16.3079
Critical Value: 7.814736
P-Value: 0.0010
Reject the Null Hypothesis because the p-value is less than 0.05.
The distribution of the customer ratings for telephone companies is different from the distribution of customer ratings for airline companies.

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