The manager of a large department store is reviewing customer service records an
ID: 3133806 • Letter: T
Question
The manager of a large department store is reviewing customer service records and wonders whether customer satisfaction is associated with age. He randomly selects 200 customers and asks them how satisfied they are. He classifies the data by the age of the customer (teenager, young adult, adult, or senior citizen) and by their degree of satisfaction (very satisfied, satisfied, unsatisfied, very unsatisfied). A hypothesis test for which of the following would be best for addressing the manager's question? One mean, known One mean, unknown Paired data Two means, using independent samples ANOVA One proportion Two proportions Independence of categorical variables ()Explanation / Answer
1. As we test the dependence of two categorical variables, we use
OPTION H: Independence of categorical variables (chi^2)
**************************
2.
As we are concerned about the mean, and we just have 1 sample, and we are given the populatio standard deviation sigma (0.03), then
OPTION A: ONE MEAN, SIGMA KNOWN [ANSWER]
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.