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In a coordinate algebra class, 22 students were male, and 10 students were female. 11 guys and 4 girls passed the EOCT. If a person is chosen at random from the class, what is the probability of it being a girl OR a person that did not pass?

A) 4/32
B) 11/32
C) 15/32
D) 18/32

User Yajushi
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1 Answer

4 votes

Final answer:

The probability of choosing a girl or someone who did not pass the EOCT in a coordinate algebra class is 21/32. The provided options do not match this result, indicating a possible typo in the question's options.

Step-by-step explanation:

The question asks us to find the probability that a randomly chosen student from a coordinate algebra class is either a girl or a person that did not pass the End of Course Test (EOCT). There are 22 males and 10 females in the class, with 11 males and 4 females passing the EOCT.

To solve this, let's identify the total number of students, the number of females, and the number of students who didn't pass the EOCT:

  • Total students: 22 males + 10 females = 32 students.
  • Number of females: 10 (since all females are either pass or fail, they are part of the 'girl or did not pass' group).
  • Students who didn't pass: (22 - 11) males + (10 - 4) females = 11 males + 6 females = 17 students. However, since the females are already counted, we only add the males who didn't pass.

The probability that a person chosen at random is a girl or didn't pass is the number of girls (which includes those who didn't pass) plus the number of males who didn't pass, divided by the total number of students:

P(girl or didn't pass) = (Number of girls + Males who didn't pass) / Total number of students = (10 + 11) / 32 = 21 / 32

None of the options A) 4/32, B) 11/32, C) 15/32, D) 18/32 matches our calculation, suggesting that there may be a typo in the provided options.

User Vestlen
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