Question

a computer manufacturer is performing a quality check to make sure the computers sound cards are working correctly. the plant manager tested 1,000 computers on monday and found that 4 had defective sound cards. what is the experimental probability of a computer having a bad sound card?

Explanation:

Step1: Recall the formula for experimental probability

Experimental probability \(P(E)=\frac{\text{Number of favorable outcomes}}{\text{Total number of trials}}\)

Step2: Identify the values

Number of favorable outcomes (defective sound - cards) \(n = 4\), total number of trials (computers tested) \(N=1000\)

Step3: Calculate the probability

\(P=\frac{4}{1000}=\frac{1}{250}=0.004\)

Answer:

\(0.004\)