A binomial probability density function should be used to represent the probability
<h3>How to determine the type of
probability density?</h3>
The given parameters are:
- Proportion that plays sport, p = 32%
- Number of students selected, p = 50
- The probability, P = (x ≤ 15)
The proportion that plays sport indicates that
68% of the students do not play sport
So, we have two events, which are
- Play sport
- Do not play sport
When there are two possible events, then the binomial probability density function should be used
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Answer:

Step-by-step explanation:
The quadratic formula:

So, we need to move all the terms to one side of the equation, which now becomes

Plugging in the numbers and you'll get the two roots/
Answer:
5/6 or 0.83333333
Step-by-step explanation:
The area is 16x do 2x^2 by 2 so 4, then 4x4=16x