Neha Tyagi and Amit Rastogi Solutions for Chapter: Statistics and Probability, Exercise 3: Exercise

The following are the ages of $300$ patients getting medical treatment in a hospital on a particular day

Form More than type cumulative frequency distribution.

A die has its six faces marked $0,1,1,1,6,6$. Two such dice are thrown together and the total score is recorded.

What is the probability of getting a total of $7?$

A lot consists of $48$ mobile phones of which $42$ are good, $3$ have only minor defects and $3$ have major defects. Varnika will buy a phone, if it is good but the trader will only buy a mobile, if it has no major defect. One phone is selected at random from the lot. What is the probability that it is acceptable to Varnika?

A lot consists of $48$ mobile phones of which $42$ are good, $3$ have only minor defects and $3$ have major defects. Varnika will buy a phone, if it is good but the trader will only buy a mobile, if it has no major defect. One phone is selected at random from the lot. What is the probability that it is acceptable to the trader?

A bag contains $24$ balls of which $\mathrm{x}$ are red, $2\mathrm{x}$ are white and $3\mathrm{x}$ are blue. A ball is selected at random. What is the probability that it is not red?

A bag contains $24$ balls of which $\mathrm{x}$ are red, $2\mathrm{x}$ are white and $3\mathrm{x}$ are blue. A ball is selected at random. What is the probability that it is white?

At a fete, cards bearing numbers $1$ to $1000$, one number on one card, are put in a box. Each player selects one card at random and that card is not replaced. If the selected card has a perfect square greater than $500$, the player wins a prize. What is the probability that the first player wins a prize?

At a fete, cards bearing numbers $1$ to $1000$, one number on one card, are put in a box. Each player selects one card at random and that card is not replaced. If the selected card has a perfect square greater than $500$, the player wins a prize. What is the probability that the second player wins a prize, if the first has won?