QUIZ 7 ANSWERS

1. Null: numbers are like draws with replacement from a box with 38 tickets. On any draw, each number is equally likely to occur.
Alternative: on some or all draws, some numbers are more likely than others. (Or just "null is not true".)
Test statistic: Chi-square statistic

2. Samples are not independent (mothers' and daughters' heights are associated), and it's not a controlled experiment. So she shouldn't use the two-sample z-test.

3. 8

4. 32%

5. 3.5%

6. Yes, the vaccine worked for the participants of the study. Berkeley studetns aren't representative of the whole population, so it will not necessarily work for the whole population