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# Age Male Female Total Under 18 55 30 85 18 – 22 25 40 65 22+

Age Male Female Total
Under 18 55 30 85
18 – 22 25 40 65
22+ 20 10 30
Total 100 80 180Based on the above information, perform the following:
(a) If a student is selected at random, what is the probability that she is a female? (2 marks)
(b) If a student is selected at random, what is the probability that he is a male or 22+ of age? (2 marks)
(c) If a student is selected at random, what is the probability that he is a male and age 18 – 22? (2 marks)
(d) If a student is selected at random, what is the probability that she is a female given that she is under 18 yrs old? (2 marks)
(e) If a person is selected at random, what is the probability that the student is 18-22 yrs old given that the person is 22+ yrs old? (2 marks)

Good day!

How many decimal places are required?

Customer: replied 3 months ago.
doesnt matter
Customer: replied 3 months ago.
File attached (M34M15T)

a) P(F) = 80 / 180 = 0.4444

b) P(M U 22+) = (100 + 30 - 20) / 180 = 0.6111

c) P(M n 18-22) = 25 / 180 = 0.1389

d) P(F | under 18) = 30 / 85 = 0.3529

e) 0

I hope this helps.

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Customer: replied 3 months ago.
can i have the workings please and in fractions

a) P(F) = 80 / 180 = 4/9

b) P(M U 22+) = (100 + 30 - 20) / 180 = 11/18

c) P(M n 18-22) = 25 / 180 = 5/36

d) P(F | under 18) = 30 / 85 = 6/17

e) 0