On the off chance that a system meets the entirety of the states of a binomial conveyance aside from the quantity of preliminaries is not fixed, at that point the mathematical dissemination can be utilized. The likelihood of getting the primary accomplishment on the xth preliminary is given by

P(x)equals=p left enclosure 1 short p right bracket Superscript x less 1p(1p)x1,

where p is the likelihood of achievement on any one preliminary. Subjects are arbitrarily chosen for a wellbeing review. The likelihood that somebody is an all inclusive donor (with bunch O and type Rh negative blood) is

0.15

Discover the likelihood that the primary subject to be a general blood benefactor is the

eighth

individual chose.

A reasonable coin is flipped twice.

In the event that the two flips come up heads, you lose $6.

In the event that at any rate one flip comes up tails, you win $2.

Leave X alone the irregular variable that compares to your rewards in dollars. Ex: X = 2 on the off chance that you win $2 and X = - 2 on the off chance that you lose $2. What is the normal estimation of X?

E[X] = ____

Bill battles that individuals spend somewhere in the range of 0 and 80 minutes every day tuning in to music, and he demands that no scope of times is any more probable than some other. Jane contends that it doesn't bode well to accept that since individuals are similarly prone to go through over two hours tuning in to music as they are to spend somewhere in the range of 30 and fifty minutes and proposes an ordinary dissemination all things considered.

As per Bill, what is the likelihood that an arbitrary individual goes through over two hours tuning in to music in a day?

@15@

A pack contains 7green marbles, 10 blue marbles, and 8 red marbles. We should consider the occasion A "Drawing a green marble" and occasion B "Drawing a red marble".

In the event that one marble is drawn from the pack, what is the likelihood of drawing a red marble and a green marble (on a similar draw)?

In the event that one marble is drawn from the pack and not supplanted, another marble is drawn, what is the likelihood of drawing a redred marble then a greengreen marble?