Answer:
Step-by-step explanation:
Given a binomial experiment with n trials and probability of success p,
Since each term of the summation is multiplied by x, the value of the term corresponding to x = 0 will be 0. Therefore the expected value becomes:
Now,
Substituting,
Factoring out the n and one p from the above expression:
Representing k=x-1 in the above gives us:
This can then be written by the Binomial Formula as:
0.25 in a fraction would be 1/4
B. 2 I believe that’s right
2/11
there’s 2 R’s and 11 total so
possible outcomes/ overall outcomes
Yes because 15+8=23 divide that into a number that could each child have and just make it into equal amounts