Using the binomial distribution, it is found that there is a 0.7941 = 79.41% probability that at least one of them is named Joe.
For each student, there are only two possible outcomes, either they are named Joe, or they are not. The probability of a student being named Joe is independent of any other student, hence, the <em>binomial distribution</em> is used to solve this question.
<h3>Binomial probability distribution
</h3>
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:
- One in ten students are named Joe, hence
.
- There are 15 students in the class, hence
.
The probability that at least one of them is named Joe is:

In which:


Then:

0.7941 = 79.41% probability that at least one of them is named Joe.
To learn more about the binomial distribution, you can take a look at brainly.com/question/24863377
Answer: 2???????
It's too short. Write at least 20 characters to explain it well.
The scale in cm to cm is:
1 cm = 20 cm
Step-by-step explanation:
Scales are used to draw maps and blueprints of large objects on paper.
Given scale is:
5 centimeters = 1 meter
WE have to find the centimeter to centimeter scale. In order to do so, we have to convert the meters into centimeters
As there are 100 centimeters in a meter
So,
the scale will be:
5 cm = 100 cm
Simplifying:
The scale in cm to cm is:
1 cm = 20 cm
Keywords: Scale, factors
Learn more about scales at:
#LearnwithBrainly
Answer:
desmos
Step-by-step explanation:
look up desmos. its a grphing calculator and it gives u all the awnsers. welcome bro