We have the formula to compute the probability of having exactly k successed over n trials, given a probability p of success (and implicitly a probability 1-p of failure), which is

Now, the probability of at least 3 successes is the union of the following event: exactly three successes,exactly four successes and exactly five successes.
We can compute their probability and sum them:
So, the answer is about 36.79%
Answer:
A
Step-by-step explanation:
The y intercept is where the line crosses the Y (vertical) axis. In this case, it happens at y=2
The slope is the rate of change. For every 1 space it moves on the horizontal axis, it moves 3 vertical spaces. It is going down, so it is -3
1,200 doctors use brand x.
I created a visual to help explain a little, here's the link : http://imgur.com/aG5e9lX
General point average (GPA) has a stronger effect on the Scholastic Assesment Test (SAT) score since the grade really depends on the scores of the students on a test. Although there is a correlation between GPA and age because of the factors such as quickness of the mentality and the ability to recall information, <span>GPA has still a stronger effect on SAT score.</span>