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11 March, 11:37

Jenna surveyed the students at her dance class to find out if they like salsa and/or ballet. The results of her survey are shown in the two-way table below:

Like Salsa

Do Not Like Salsa

Total

Like Ballet

32

42

74

Do Not Like Ballet

22

4

26

Total

54

46

100

If a student does not like ballet, what is the probability that student also does not like salsa?

8.7%

15.4%

18.2%

84.6%

+2
Answers (2)
  1. 11 March, 14:17
    0
    The answer is 15.4 because the student who don't like ballet and don't like salsa is 4 divided by the total which is 26.
  2. 11 March, 15:19
    0
    like salsa hate salsa total

    like ballet 32 42 74

    hate ballet 22 4 26

    total 54 46 100

    if a student does not like ballet (there is 26 that do not like ballet) ... what is the probability that the student does not like salsa ... of those 26 that do not like ballet, 4 do not like salsa ...

    4/26 = 0.1538 = 15.38% rounds to 15.4% <=
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