Question

A survey of 25 students in line during registration that 3 were math majors, 10 were history majors, 2 were psychology majors, 7 were biology majors and the rest were undecided. If the clerk calls a name from the same line of students at random, find the probability of students would be either history or biology major. Express your answers in simplest form.

Answer 1

The probability of a student in line during registration being either a history or biology major is 0.68.

Step-by-step explanation:

To find the probability that a student in line during registration would be either a history or biology major, we need to calculate the number of students with these majors and divide it by the total number of students.

The survey results showed that 10 students were history majors and 7 students were biology majors. So, 10 + 7 = 17 students would be either history or biology majors.

Since there were 25 students in total, the probability can be calculated as:

P(History or Biology) = 17/25 = 0.68.