In a recent survey of 100 women, the following information was gathered.
54 use shampoo B.
30 use shampoo C.
12 use shampoos A and B.
20 use shampoos A and C.
5 use shampoos B and C.
4 use all three.
Use the figure to answer the question in the problem.
How many are using shampoo A only (Region I)?
1[removed][removed][removed] women
| Question Part |
| Points |
| 1 |
| –/0.36 |
| Total |
| –/0.36 |
31 rode in a carpool.
31 rode public transportation.
5 used both carpools and public transportation.
8 used both a carpool and sometimes their own cars.
6 used buses as well as their own cars.
4 used all three methods.
1[removed][removed][removed]students
| Question Part |
| Points |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| –/0.36 | –/0.36 | –/0.36 | –/0.36 | –/0.36 | –/0.36 | –/0.36 | –/0.36 |
| Total |
| –/2.88 |
|U| =
230, |A| =
30, |B| =
12, |C| =
20 |A∩B| =
2, |A∩C| =
3, |B∩C| =
3, |A∩B∩C| =
1
| | I | | = | 1[removed][removed][removed] |
| | II | | = | 2[removed][removed][removed] |
| | III | | = | 3[removed][removed][removed] |
| | IV | | = | 4[removed][removed][removed] |
| | V | | = | 5[removed][removed][removed] |
| | VI | | = | 6[removed][removed][removed] |
| | VII | | = | 7[removed][removed][removed] |
| | VIII | | = | 8[removed][removed][removed] |
1
[removed][removed]
10
11 ways
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