Question

Use the u inform distribution of voltage levels shown in the figure.

Answer 1

In the given figure we can observe a diagram of voltage levels vs P(x).

The probability a random coltage is lees than 124.2 volts is given by the area of the square under 124.2.

A diagram of the situation is:

The area of a rectangle is given by the formula:

`A=W*L\rightarrow W=width,L=length`

The width and length of this rectangle are:

`\begin{gathered} W=124.2-123.0=1.2 \\ L=0.5 \end{gathered}`

So, the area is:

`A=1.2*0.5=0.6`

Thus, the probability a random voltage is less than 124.2 is 0.60