Among 150 persons interviewed as part of an urban mass transportation study, some live more than 3 miles from the center of the city(A), some now regularly drive their own car to work (B), and some would gladly switch to public mass transportation if it were available (C). Use the information given (see attached file) to find...

Question

anonymous · Answer

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calculusfunctions · Answer

I checked your work and the following are incorrect:$$n(A∩B)$$and$$n(A∩C)$$Furthermore,$$n(A∪B∪C)=n(A)+n(B)+n(C)-n(A∩B)-n(A∩C)-n(B∩C)+n(A∩B∩C)$$

anonymous · Answer

Did you type more after "-n(A intersection C)-r"? If so could you repost that last bit its cut off on my screen.

anonymous · Answer

and whats the code for "intersection"? I don't see it in the equations menu.

calculusfunctions · Answer

Sure after the 

...n(A ∩ C) − n(B ∩ C) + n(A ∩ B ∩ C).

It's strange that it was cut off but I hope you can see it now.

anonymous · Answer

is $$n(A intersection B)=20+54=74$$ and $$N(A intersection C)=8+54=62$$?

anonymous · Answer

And for that last one don't you mean the union of "not A", "not B", "C"

calculusfunctions · Answer

No, the formula I gave you is the correct one.

anonymous · Answer

@calculusfunctions Is 74 and 62 the right answers for the problems above?
If thats the case then N(AUBUC)= 84+99+85-74-62+54=186?