Answer to Question #239425 in Statistics and Probability for Bbb

Question

Suppose there are three people to be tested in Covid-19. P for positive, N for negative
Let Y be the random variable representing the number of infected/positive person that occur.
Complete the table below and find the values of random variable Y.
Values of Random Variables Y

Answer 1

There are three people to be tested for COVID19

Let y is a number of infected or positive people.

Now possibilities of the result may be:-

All negative(0 infected) or 1 positive 2 negative (1 infected) or 2 positive 1 negative (2 infected) or 3 positive 0 negative (3 infected)

hence the values of y can be:-

$y = 0,1,2,3.$