Chapter 15 – Probability

6. Refer to Table 14.7, Chapter 14. (i) Find the probability that a student obtained less than 20% in the mathematics test. (ii) Find the probability that a student obtained marks 60 or above. 6. Refer to Table 14.7 Chapter 14. (i) Find the probability that a student obtained less than 20% in the mathematics [...]

5. 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. The information gathered is listed in the table below: Suppose a family is chosen. Find the probability that the family chosen is (i) earning ₹10000 – 13000 per month [...]

4. Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes: If the three coins are simultaneously tossed again, compute the probability of 2 heads coming up. 4. Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes: If the three coins are simultaneously tossed again compute [...]

3. Refer to Example 5, Section 14.4, Chapter 14. Find the probability that a student of the class was born in August. 3. Refer to Example 5 Chapter 14. Find the probability that a student of the class was born in August. Section 14.4 October 17, 2020 Category: Chapter 15 - Probability , Maths , [...]

2. 1500 families with 2 children were selected randomly, and the following data were recorded: Compute the probability of a family, chosen at random, having (i) 2 girls (ii) 1 girl (iii) No girl Also check whether the sum of these probabilities is 1. 2. 1500 families with 2 children were selected randomly and the [...]

1. In a cricket match, a batswoman hits a boundary 6 times out of 30 balls she plays. Find the probability that she did not hit a boundary. 1. In a cricket match a batswoman hits a boundary 6 times out of 30 balls she plays. Find the probability that she did not hit a [...]