No need to provide explanation, just the statistical method. ?2-test for differe

Question

No need to provide explanation, just the statistical method. ?2-test for difference of population proportions x2-test for independence Goodness of fit test .One-way ANOVA Two-way ANOVA (repeated measures ANOVA) Simple regression Multiple regression Binary logistic regression For each of the following problems, choose the appropriate statistical method from the above list and explain your choice. 1. (10 pts) A company manager wants to know how the product development cost and the marketing cost affect sales in the past 15 years. Choose the statistical method and explain your choice. 2. (10 pts) A person wants to compare the average time spent on social media among three age groups: 18-30, 31-50, older than 50. Choose the statistical method and explain your choice 3. (10 pts) A medical researcher wants to study the effect of a medicine. The scale of the effect is between 1 and 100. He chooses three different groups of patients. Group 1 is given placebo; group 2 is given 10mg of the medicine for each patient; group 3 is given 10mg of the medicine for each patient.

Explanation / Answer

1a) Mutliple Regression.

2a) One way ANOVA

3a)One way ANOVA

4a) Chisquare test for difference of population proportions

5a) Goodness of fit test

6a) two way ANOVA

8a) chi square test for test of Independence.

7a) chi square test for test of Independence,or two way ANOVA (Not sure)

9a) Multiple Regression

10a) chi square test for test of Independence.

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