Question

ten of the 50 digital video recorders (dvrs) in an inventory are known to be defective. what is the probability that a randomly selected item is defective? the probability is . (type an integer or a decimal. do not round.)

Explanation:

Step1: Identify total and favorable

Total number of DVRs is 50, number of defective DVRs is 10.

Step2: Apply probability formula

Probability $P=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}=\frac{10}{50}$

Answer:

$0.2$