Question

distance in kilometre of 40 teachers from the residence to the school are given below
5, 19, 7, 12, 3, 10, 9, 14, 10, 12, 7, 2, 20, 17, 8, 9, 15, 18, 3, 6, 11, 11, 5, 15, 15, 12, 12, 15, 7, 17, 15, 7, 12, 16, 18, 6, 20, 2, 3, 2. find the probability that a teacher selected at random


A) lives at a distance less than 7 km from her school
B)lives at a distance atmost 15 km from her school
C)lives within 1km from her school

Answer 1

A)8
C)0
B)33
IS YOUR ANS

Answer 2

Solution:-

A. number number of teachers lives at distance less than 7Km= 11

total outcomes= 40

P(E)= 11/40.

B. number of teachers live at most 15 km= 5

total outcomes =40

P(E)=5/40=1/8

C. number of teacher lives 1km=0

total outcomes =40

P(E) = 0/40=0