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  • An organisation selected 2400 families at random and surveyed them to determine a relationship between income level and the number of vehicles in a family: earning less than Rs.7000 per month

Q5. An organization selected 2400 families at random and surveyed them to determine a
relationship between income level and the number of vehicles in a family. The
information gathered is listed in the table below:

Suppose a family is chosen. Find the probability that the family chose is

(iii) earning less than Rs. 7000 per month and does not own any vehicle.

Answers (1)

Although it is given that,

Total no. of families= 2400

Let us find by this adding all the cases

= 10+0+1+2+1+160+305+535+469+579+25+27+29+59+82+0+2+1+25+88 =2400 

Total no. of families, those are earning less than Rs. 7000 per month and not having any vehicle = 10

P(earning less than Rs. 7000 per month and does not have any vehicle)= P3

P3 = 10/2400

=1/240

Ans: 1/240

Posted by

Amit Singh

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