answer to slide 32: Bwe use a z test statistic to test a null hypothesis about a single population proportionwe use the chi-square test of goodness of fit to test a null hypothesis about the entire distribution of a categorical variablewe can also use it to test whether a categorical variable has the same distribution in two (or more) populationsSlide 35: Answer: ASlide 47:Answer: BWe have two rows and three columns so we are doing 1X2 so we have 2 degrees of freedomSlide 48Answer: CWe have 8 Rows (8-1) 3 columns so 7X3 = 21Hypothesis Testing with Proportions 04/23/2014-answer to slide 32: B-we use a z test statistic to test a null hypothesis about a single populationproportion-we use the chi-square test of goodness of fit to test a null hypothesis about the entire distribution of a categorical variable-we can also use it to test whether a categorical variable has the same distribution in two (or more) populations -Slide 35: Answer: A-Slide 47:-Answer: B-We have two rows and three columns so we are doing 1X2 so we have 2 degrees of freedom-Slide 48-Answer: C-We have 8 Rows (8-1) 3 columns so 7X3 =
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