Basic Applied Statistics 200
Solutions to Practice Quiz 4

1.  
   1. 0.67
   2. 0.25
   3. 0.1(0.1)=0.01
2.  
   1. (140+60+240)/2000=0.22
   2. 60/2000=0.03
   3. age, (ii)
   4. 60/200=0.30
   5. 240/1800=0.13
   6. Yes: proportions seem very different.
   7. 30, 270
3.  
   1. (ii)
   2. (ii)
   3. (ii)
   4. 0.45
   5. s=0.02365
   6. 0.46-0.45=+0.01
   7. (ii)
   8. yes
   9. (i)
   10. (iii)
   11. 0.260, 0.280

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