Question

1. which formula is used to calculate the probability of an event e?

a. ( p(e)=\frac{\text { total number of possible outcomes }}{\text { number of favorable outcomes }} )
b. ( p(e)=\frac{\text { number of favorable outcomes }}{\text { total number of possible outcomes }} )
c. ( p(e)=\text { favorable outcomes } div \text { total outcomes } )
d. ( p(e)=\text { total outcomes }- \text { favorable outcomes } )

Explanation:

The probability of an event \(E\) is calculated by dividing the number of favorable outcomes by the total number of possible outcomes. Option a has the fraction inverted. Option c uses the division symbol which is less standard in probability formula notation compared to the fraction form. Option d is a subtraction which is incorrect for probability calculation.

Answer:

B. \(P(E)=\frac{\text{Number of favorable outcomes}}{\text{Total number of possible outcomes}}\)