Question

Giving a test to a group of students, the grades and gender are summarized below ABCTotalMale10171946Female53917Total15202863If one student is chosen at random,Find the probability that the student did NOT get an "A". Round your answer to 3 decimal places.

Answer 1

We have to find the probability that a randomly selected student did not get an "A" score.

As the student can be male or female, we can calculate the probability as the quotient between the total number students that didn't get an A (or get a B or a C) and the the total number of students.

Then, we can calculate the probability as:

`P(not\text{ }A)=(N-f_A)/(N)=(63-15)/(63)=(48)/(63)\approx0.762`

Answer: the probability is 0.762.