(a)
(b)
From above we have
By the complement rule we have
Now,
b)
Total number of subjects 1000000.
Following is the completed two by two table:
c)
d)
e)
From table we have
So,
2)L : study was reported in whic h ninth grade Minnesota teens were asked whether they...
2) A study was reported in which ninth grade Minnesota teens were asked whether they had gambles at least once a week in the past year. The sample consisted of 49.1% boys and 50.9% girls. The proportion of boys who had gambled at least once per week during the past year was 0.229, while among girls this proportion was only 0.045. Let B the event the person is a boy, and C the event the person is a weekly gambler....