An economist wishes to determine whether there is evidence that the average family income in a community is less than $75,000 or not. Should she use a two-tail or upper tail or lower tail hypothesis test? Explain.
An economist wishes to determine whether there is evidence that the average family income in a community is less than $75,000 or not. Should she use a two-tail or upper tail or lower tail hypothesis test? Explain.
(d) Briefly explain the steps needed for a completely randomized experimental design in Analysis of Variance. Give a real world example to clarify. Use at least 8 sentences to answer this question.
(e) What is multiple regression analysis? What are the differences between the simple linear regression analysis and the multiple regression analysis? Give a real world example to clarify. Use at least 8 sentences to answer this question.
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