4. You want to test whether the quarter of birth affects grades at university. Assuming that...

4. You want to test whether the quarter of birth affects grades at university. Assuming that births are randomly distributed throughout the year (this might not be correct in real life) you collect data on a sample of 100 students and get the following: Quarter birth Q1 Q2 Q3 Q4 Average grade 65 62 63 58 N 25 27 28 20 Compute the appropriate test using a 5% significance level Hint: Don’t forget to reweight the test of each category by the number of observations, as each cell represents the mean Xi for m observations.

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orchestra answered 1 year ago

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