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Original Question
a survey of 70 customers was taken at a bookstore regarding the type of books purchased. the survey found that 42 customers pur...Asked by Mia
A survey of 59 customers was taken at a bookstore regarding the types of books purchased. The survey found 36 customers purchased mysteries, 28 purchased science fiction, 21 purchased romance novels, 15 purchased mysteries and science fiction, 12 purchased mysteries and romance novels, 8 purchased science fiction and romance novels, and 4 purchased all three types of books
Answers
Answered by
Reiny
N = N(M) + N(S) + N(R) - N(M and S) - N(M and R) - N(S and R) + N(M and S and R)
= 36+28+12 - 15 - 12 - 8 + 4
= 45
If the question is, How many did not buy any type of book, then it would be 59-45 or 14
You did not state a question.
You could draw a Venn diagram and all mysteries would be revealed.
= 36+28+12 - 15 - 12 - 8 + 4
= 45
If the question is, How many did not buy any type of book, then it would be 59-45 or 14
You did not state a question.
You could draw a Venn diagram and all mysteries would be revealed.
Answered by
leah
32
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