00:01
Hello, here we have to solve the following problem.
00:03
The parameters of binomial equation are given, n is 30, and p, chance of success, is 0 .03, and x equals to 2.
00:27
And here i presume we have to find probability that x equals to 2.
00:32
So that's what i assume in the task, because unfortunately the question is not clearly stated.
00:42
So here is the binomial probability.
00:46
Now let's use the formula.
00:47
So that's 30 factorial over 2 factorial, 30 minus 2 factorial, times chance of success, 0 .03 power by 2, times 1 minus chance of success, power by 30 minus 2.
01:02
And now let's simplify this expression...