Chapter 12.1, Problem 2CYU

(a)

To determine

The percentage of lots that inspection department rejects. Where, the number $X$ of defective radios in a sample of three radios given in the following table.

$\begin{array}{ccccc}\text{Defectives}& 0& 1& 2& 3\\ \text{Probability}& 0.7265& 0.2477& 0.0251& 0.0007\end{array}$

(b)

To determine

To calculate: The mean number of defective radios in the samples of three radios. Where, the number $X$ of defective radios in a sample of three radios given in the following table.

$\begin{array}{ccccc}\text{Defectives}& 0& 1& 2& 3\\ \text{Probability}& 0.7265& 0.2477& 0.0251& 0.0007\end{array}$

(c)

To determine

The average number of defective radios in each lot of 100 radios, based on the evidence in part b.