Answer:
35/132.
Step-by-step explanation:
There are a total of 12 balls. So:
Prob(First is green) = 5/12.
After the first selection there are 11 balls left.
Prob(The second is red) = 7/11.
The required probability = 5/12 * 7/11
= 35/132.
Note: the probabilities are multiplied because the 2 events are independent.
Answer:
round ones
Step-by-step explanation:
Using the binomial distribution, it is found that there is a 0.0116 = 1.16% probability that exactly 4 out of the first 14 customers buy a magazine.
<h3>What is the binomial distribution formula?</h3>
The formula is:


The parameters are:
- x is the number of successes.
- n is the number of trials.
- p is the probability of a success on a single trial.
In this problem:
- 7% of his customers buy a magazine, hence p = 0.07.
- A sample of 14 customers is taken, hence n = 14.
The probability that exactly 4 out of the first 14 customers buy a magazine is P(X = 4), hence:


0.0116 = 1.16% probability that exactly 4 out of the first 14 customers buy a magazine.
More can be learned about the binomial distribution at brainly.com/question/24863377
Answer:
b
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
Because it's Ax^4+Bx^3+Cx^2=0, factor out an x^2 from all of them and you get (x^2)(Ax^2+Bx+C)=0
Stand form is Ax^2+Bx+C=0, and the answer C is the only one that does that. Hope this helps