Chapter 12.7, Problem 5P

To determine

To find: The number of light bulb in the warehouse that are likely to work.

Answer to Problem 5P

The working number of light bulb in the ware house is $35011$ .

Explanation of Solution

Given:

The number of bulb inspected are 700.

The working bulbs are 692.

The total bulbs are 35400.

Calculation:

Consider the formula for the probability of the event is of the form,

  $P=\frac{\text{number}\text{of}\text{favorable}\text{outcomes}}{\text{number}\text{of}\text{possible}\text{outcomes}}$

Then, the probability for the number of light bulbs working is,

  $\begin{array}{c}P\left(\text{light}\text{works}\right)=\frac{692}{700}\\ =0.9885\end{array}$

Then, the light bulb that works is obtained as,

  $0.9885\left(35400\right)=35011$