Answer:
Binomial, with 
Step-by-step explanation:
For each student, there are only two possible outcomes, either they own a cellphone, or they do not. The probability of a student in the sample owning a cellphone is independent of whether other students own a cellphone or not. This means that we use the binomial probability distribution to solve this question.
Binomial probability distribution:
Probability of exactly x sucesses on n repeated trials, with p probability.
90% of students now own a cell phone.
This means that 
Fifteen students are to be selected at random from a large university.
This means that 
What is the appropriate distribution for X?
Binomial, with 
Answer:
I think the first x for question one is 0
Step-by-step explanation:
-2-(-1)/0-(-2)
Answer:
5y = x
Step-by-step explanation:
15 miles = 3 hours
Divide by 3 on both sides to find how many miles he/she can run in 1 hour.
15 miles = 3 hours ⇒ 5 miles = 1 hour
Therefore, the equation is just 5y = x.
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Answer:
D
Step-by-step explanation:
<em>Midpoint Formula:</em>

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