Suppose 30 percent of all electrical fuses manufactured by a certain
company fail to meet municipal building standards. What is the probability
that in a random sample of 10 fuses, exactly 3 will fail to meet municipal
building standards?

Question

Suppose 30 percent of all electrical fuses manufactured by a certain
company fail to meet municipal building standards. What is the probability
that in a random sample of 10 fuses, exactly 3 will fail to meet municipal
building standards?

kropot72 · Answer

You can use the binomial distribution to solve this.
$$\large P(3\ fail)=10C3\times0.3^{3}\times0.7^{7}=you\ can\ calculate$$