Use the at least once rule to find the indicated probability.
-In a blood testing procedure, blood samples from 5 people are combined into one mixture. The mixture will only test negative if all the individual samples are negative. If the probability that an
Individual sample tests positive is 0.08, what is the probability that the mixture will test positive?

Question

Quizplus · Accepted Answer

The probability that an individual sample tests negative is 0.92 (1 - 0.08). The probability that all 5 samples test negative is 0.92^5. The probability that at least one sample tests positive (and thus the mixture tests positive) is 1 - 0.92^5 = 0.341.

Use the at Least Once Rule to Find the Indicated