9. In Brooklyn, on average nearly four-fifths of residents (79.86%) have a first dose of their COVID vaccine (n = 37 zip codes). What’s the average first-dose recipiency rate in the Bronx? Following up on question 9, comparing averages in Brooklyn and the Bronx, what’s the point estimate for the population difference? What is the standard error of the point estimate from Question 10? Following up on questions 9–11, if you were to test for the significance of the difference in average first-dose recipiency rates between the two boroughs, what would the test statistic be? Is the difference in average first-dose recipiency rates between Brooklyn and the Bronx significant at the .05 level? Is the difference in average first-dose recipiency rates between Brooklyn and the Bronx significant at the .05 level?

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