An urn contains 7 green and 8 pink balls. Four balls are randomly drawn from the urn in succession, with replacement. That is, after each draw, the selected ball is returned to the urn. What is the probability that all 4 balls drawn from the urn are pink? Round your answer to three decimal places.

Step-by-step explanation:

GIVEN: An urn contains green and pink balls. Four balls are randomly drawn from the urn in succession, with replacement. That is, after each draw, the selected ball is returned to the urn.

TO FIND: What is the probability that all 4 balls drawn from the urn are pink.

SOLUTION:

Total balls in urn

Total green balls

Total pink balls

probability of getting a pink ball

As selected ball is returned to the urn, therefore drawing a ball is an independent event.

probability of getting all balls pink

Hence the probability that all 4 balls drawn from the urn are pink is

angle addition postulate

2x=56

step-by-step explanation:

the first one, all those points on the line just make a strait line.