An urn contains white and red 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 balls drawn from the urn are red

[r/(w + r)]^4

Step-by-step explanation:

The numbers of the different balls are not given, but here is the solution.

Let w = number of white balls.

Let r = number of red balls.

The total number of balls is w + r.

All drawings have the same probability since there is replacement.

Each drawing has the following probability of drawing a red ball:

p(red) = r/(w + r)

Since there are 4 drawings, and they are all independent events, the overall probability is the product of the individual probabilities.

p(4 red balls in 4 drawings) = [r/(w + r)]^4

To find an actual number, replace w and r with the correct numbers and evaluate the expression.

answer: input the dimensions of the room to be painted. click the button to calculate the amount of paint and man-hours needed for this job.

interior paint coverage depends on the brand of paint used. the coverage amount is listed on the label of the paint can. use this to adjust the values in the paint coverage section below. paint usually is applied at 350 to 400 square feet per gallon (primer at 200 to 300 square feet per gallon).

step-by-step explanation:

the answer is 1 becuz if it were 1.0 that would rip apart the entire so ya. : )

~potato.

copyright potato 2019.