Question

In Evan's senior class of 240 students, 85% are planning to attend college after graduation. What is the

probability that a senior is chosen at random not planning to attend college after graduation?

Answer 1

For this case we want to find the probability that a senior is chosen at random not planning to attend college after graduation so then we can use the complement rule given by:

`P(A') = 1-P(A)`

Where A is the vent of interest and replacing we got:

`P(A') = 1-0.85= 0.15`

So then the probability that a senior is chosen at random not planning to attend college after graduation is 0.15 or 15%

Explanation:

For this case we know that the sample size if n =240 and we also know that the probability that in the Evan's class the any student are planeed to attend collge after graduation is:

`P(A) =0.85`

For this case we want to find the probability that a senior is chosen at random not planning to attend college after graduation so then we can use the complement rule given by:

`P(A') = 1-P(A)`

Where A is the vent of interest and replacing we got:

`P(A') = 1-0.85= 0.15`

So then the probability that a senior is chosen at random not planning to attend college after graduation is 0.15 or 15%