Question

if 4 students in a class of 20 are randomly chosen to present their project, what is the probability of being chosen to present?
o $\frac{4}{20}$
o $\frac{16}{20}$
o $\frac{1}{4}$
o 1

Explanation:

Step1: Identify favorable and total outcomes

Favorable outcomes are 4 (students chosen), total outcomes are 20 (total students).

Step2: Calculate probability

Probability formula is $P=\frac{\text{Favorable outcomes}}{\text{Total outcomes}}$, so $P = \frac{4}{20}=\frac{1}{5}$.

Answer:

$\frac{1}{5}$