Answer:
34.87% probability that all 5 have a wireless device
Step-by-step explanation:
For each student, there are only two possible outcomes. Either they own a wireless device, or they do not. The probability of a student owning a wireless device is independent from other students. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which
is the number of different combinations of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.
81% of students own a wireless device.
This means that 
If 5 students are selected at random, what is the probability that all 5 have a wireless device?
This is P(X = 5) when n = 5. So


34.87% probability that all 5 have a wireless device
Answer:the answer is 4
Step-by-step explanation:
18² - 4 * 3 * 7 =240
x1 = (-b-root of 240)/2a = ............
x2 =(-b + root of 240)/2a = ........
Answer:
848.23
Step-by-step explanation:
Step 1: Find Volume Of The The Cake
Volume = 
Evaluate: ~848.23
Step 2: Find The Part The Was Eaten:
Full Circle: 360
Eaten = 25
Part: 25/360 = 14.4
Set 3: Find Volume Eaten:
14.4/848.23 = 58.90
The data value that is an outlier is 67
<h3>How to determine the outlier?</h3>
The dataset is given as:
83, 84, 85, 87, 89, 88, 67, 79, and 81
To determine the outlier, we select the data values that are relatively far from others
In the above dataset, the data element 67 is far from other data values
Hence, the data value that is an outlier is 67
Read more about outlier at:
brainly.com/question/3631910
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