SOLUTION: The mathmatics department of a college has 14 male professors, 14 female proffesors, 7 male teaching assistants, and 14 female teaching assistants. If a person is selected at rando

Question 320928: The mathmatics department of a college has 14 male professors, 14 female proffesors, 7 male teaching assistants, and 14 female teaching assistants. If a person is selected at random from the group, find the probability that the selected person is a teaching assistant or a female.
Answer by nyc_function(2741) (Show Source): You can put this solution on YOUR website!
You need the formula: P(A or B) = P(A) + P(B) - P(A and B),
where is P = probability.
Let A = selecting a teaching assistance
Let B = selecting a female
P(A or B) = P(A) + P(B) - P(A and B)
P(A or B) = (28/49) + (28/49) - (28/49*28/49)
P(A or B) = (4/7) + (4/7) - (4/7*4/7)
P(A or B) = (8/7) - (16/49)
P(A or B) = 40/49

RELATED QUESTIONS
The mathematics department of a college has 10 male professors, 8 female professors, 15... (answered by richwmiller)

The mathematics department of a college has 6 male professors, 11 female professors,10... (answered by Edwin McCravy)

Use the data in the table to find the probability. P(student is a senior and male).... (answered by jim_thompson5910)

Giving a test to a group of students, the grades and gender are summarized below A B... (answered by ewatrrr)

Which sneakers are prefered? female- running 12 cross training 28 Male- running 42... (answered by stanbon)

there are 756 male studentsat a college .the ratio of students to male to female students (answered by Alan3354,ikleyn,josgarithmetic)

calculate the average age of migrants for both the categories of gender and write your... (answered by ikleyn)

Giving a test to a group of students, the grades and gender are summarized below A B C (answered by math_tutor2020)

Education Attainment in Millions, U.S. Population 25 and over. Less than 4 years of... (answered by stanbon)