Question

求哪位大神可以帮我解答一道英文的概率题啊？（图中第15题） 解答得好，另有重赏~~~

Answer 1

a.要列怎样的表啊?知道行或列的标题吗?

b. 750+170+950+130=2000
(750+170)/2000*100%=46% The age of 46% of the population is between 18 and 34 years old.
(950+130)/2000*100%=54% The age of 54% of the population is 35 years old and above.
So, the age of nearly half of the population is 18 to 34 years old. The USA population is quite young.

c.P(a randomly selected individual does not have health insurance coverage)
=(130+170)/2000
=3/20 (15%)

d. P(the individual aged between 18 and 34 does not have health insurance coverage)
=170/(750+170)
=17/92

e. P(the individual aged 35 and above does not have health insurance coverage)
=130/(950+130)
=13/108

f.P(the individual without health insurance coverage is in the 18--34 age group)
=170/(170+130)
=17/30

g.应该随便写一些就行了。
e.g. The Health Insurance coverage of people who is 35 years old and above is better than that of people whose age is between 18 and 34 years old.

Answer 2

这题我也没弄懂，我去找别人给你看看，我算蒙了

追问

别人这么说的，这道题该如何求解？