# 10 percent of cells manufactured by a biomedical company turn out to be defectiv

**Question description**

Suppose that a coin is tossed twice. Let X be a random variable (RV) which represents the number of heads obtained in the experiment.

a) Graph the probability function (PF) for X.

b) Graph the cumulative distribution function (CDF) for X.

10 percent of cells manufactured by a biomedical company turn out to be defective.

Find the probability that in a random sample of 10 cells, exactly 2 will be defective

Using

a) the binomial distribution

b) the Poisson approximation to the binomial distribution

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