Yvette, let's knock this out.
To solve probability problems, follow these steps:
Step 1: Understand the event. Identify what you are trying to find the probability of.
Step 2: Determine the total number of possible outcomes. This is the size of your sample space.
Step 3: Determine the number of favorable outcomes. This is the number of outcomes that satisfy the event you are interested in.
Step 4: Calculate the probability. The probability of an event is the ratio of favorable outcomes to the total number of possible outcomes.
The formula for probability is:
P(E)=TotalnumberofpossibleoutcomesNumberoffavorableoutcomes
For example, if you want to find the probability of rolling a 4 on a standard six-sided die:
• The event is rolling a 4.
• The total number of possible outcomes is 6 (numbers 1 through 6).
• The number of favorable outcomes is 1 (only the number 4).
• The probability is P(rollinga4)=61.
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