The following figure is a probability density curve that represents the lifetime, in months, of a certain type of laptop battery. Find the proportion of batteries with lifetimes less than 20 months.
A) 0.26
B) 0.20
C) 0.8
D) 0.06

Question

The following figure is a probability density curve that represents the lifetime, in months, of a certain type of laptop battery.  Find the proportion of batteries with lifetimes less than 20 months.
A) 0.26 
B) 0.20 
C) 0.8 
D) 0.06

Quizplus · Accepted Answer

To find the proportion of batteries with lifetimes less than 20 months, we need to look for the area under the curve to the left of the vertical line at 20 months. Using the graph, we can see that this area is approximately 0.26. Therefore, the answer is A.

The Following Figure Is a Probability Density Curve That Represents