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Solution - 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 - CBSE Class 9 - Mathematics

ConceptProbability - an Experimental Approach

Question

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:-

Monthly income

(in Rs.)

Vehicles per family
0 1 2 Above 2
Less than 7000 10 160 25 0
7000 – 10000 0 305 27 2
10000 – 13000 1 535 29 1
13000 – 16000 2 469 59 25
16000 or more 1 579 82 88

Suppose a family is chosen, find the probability that the family chosen is

(i) earning Rs 10000 − 13000 per month and owning exactly 2 vehicles.

(ii) earning Rs 16000 or more per month and owning exactly 1 vehicle.

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

(iv) earning Rs 13000 − 16000 per month and owning more than 2 vehicles.

(v) owning not more than 1 vehicle.

Solution

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Reference Material

Solution for question: 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 concept: Probability - an Experimental Approach. For the course CBSE
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