4. You later learn that people from the ‘class’ group from Q3 had classmates who had...

4. You later learn that people from the ‘class’ group from Q3 had classmates who had also tried Duolingo. (IE these classmates had started in a ‘class only’ group, and then added ‘duolingo’). The data for these people are provided below. 4a. State the null and alternative hypotheses (1 point) 4b. Calculate the test statistic (3 points); and state your conclusion (use the same alpha from Q3) (1 point) 4c. What are some reasons why your conclusions from Q3 and Q4 differ from one another? (Especially despite the larger sample size in Q3)

Expert Solution

orchestra answered 1 year ago

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