Question 20 (1 point) A statistics teacher wants to know if the student birth month is distributed equally across all months. He uses school records to determine the birth month of all the students at the school and calculates a chi-square statistic to test this hypothesis. Why is this not an appropriate use of a chi-square goodness-of-fit test? O a The number of days in each month are not the same. Ob There are twelve months, and this is too many different categories for a goodness-of-fit test. C Because his population of interest is his school, he has taken a census, not a sample. O d We cannot be confident that each person's birth month is independent of other's birth months. O e The distribution of birth month is not Normally distributed