Question

A density graph for all of the possible times from 50 seconds to 300 seconds

can be used to find which of the following?
• A. The probability of a time from 25 seconds to 250 seconds
B. The probability of a time from 150 seconds to 350 seconds
• C. The probability of a time from 75 seconds to 350 seconds
• D. The probability of a time from 75 seconds to 250 seconds and

Answer 1

Answer: D. The probability of a time from 75 seconds to 250 seconds.

Explanation:

We know that a density curve graph for all of the possible values from a to b can be used to find the the probability of the values from a to b .

Given: A density graph for all of the possible times from 50 seconds to 300 seconds.

Then it can be used to find the the probability of a time in the range from 50 seconds to 300 seconds.

From all the given option only option D gives the interval which is lies in the above range.

i.e A density graph for all of the possible times from 50 seconds to 300 seconds can be used to determine the probability of a time from 75 seconds to 250 seconds.