Question

The table given below shows the ages of 75 teachers in
Age on years
Number of teachers
18-29 30-39 40-49 50-59
3 27 37 8
A teacher from this school is chosen at random. What
is the probability that the selected teacher is :
(1) 40 or more than 40 years old?
​

Answer 1

P(E) =$\dfrac{3}{5}$

Step-by-step explanation:

The table given below:

Age on years                   18 -29      30-39    40-49     50-59

Number of teachers       3               27          37           8

Total number of teachers = 75

∴ All possible outcomes = 75

(1) Let E be the age of teacher are 40 or more than 40 years old.

Number of favourable outcomes = 37 + 8 = 45

∴ P(E) = $\dfrac{Number of favourable outcomes}{All possible outcomes}$

= $\dfrac{45}{75} =\dfrac{3}{5}$

Hence,  P(E) =$\dfrac{3}{5}$

Answer 2

Answer:

hope it will help you ..................