Statistics probability problems

We flip a coin one time. Each sample point has equal probability. In a certain country last year a total of million tons of trash was recycled.

Statistics probability problems

Example 1 Suppose we conduct a simple statistical experiment. The probability of event A is denoted by P A. How to Solve Probability Problems You can solve many simple probability problems just by knowing two simple rules: The probability of any sample point can range from 0 to 1. What is the probability of each sample point? Example 2 Let's repeat the experiment of Example 1, with a die instead of a coin. The coin flip can have one of two equally-likely outcomes - heads or tails. Solution: For this experiment, the sample space consists of 8 sample points. Or there are possibilities to different degrees the event may occur.

What is the probability that we draw a spade? So is the probability of tail. Examples of events can be : Tossing a coin with the head up Drawing a red pen from a pack of different coloured pens Drawing a card from a deck of 52 cards etc.

The following sample problems show how to apply these rules to find 1 the probability of a sample point and 2 the probability of an event. Example 2: Consider the example of finding the probability of selecting a black card or a 6 from a deck of 52 cards.

Probability questions and answers examples

A committee of 5 people is to be formed randomly from a group of 10 women and 6 men. Find the probability that the committee has a 3 women and 2 men. In mathematics too, probability indicates the same — the likelihood of the occurrence of an event. The coin flip can have one of two equally-likely outcomes - heads or tails. The chart below shows the distribution, in millions of tons, for the different types of trashes. So is the probability of tail. The probability of event A is denoted by P A. A student from this group is selected randomly. P A and B is the probability of the occurrence of both A and B at the same time.

Example 1 Suppose we draw a card from a deck of playing cards. Find the probability that a exactly 5 have access to the internet.

probability and statistics

A student from this group is selected randomly. P A or B is the probability of the occurrence of atleast one of the events. Probability of an Event The probability of an event is a measure of the likelihood that the event will occur.

How to Solve Probability Problems You can solve many simple probability problems just by knowing two simple rules: The probability of any sample point can range from 0 to 1.

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Probability Problems