Answer:
The expected number of seat belt wearing drivers among the five cars is 3.75, using the expected value of a binomial experiment.
Step-by-step explanation:
For each driver, there are only two possible outcomes. Either they wear their seatbelts, or they do not. This means that we solve this problem using concepts of the binomial probability distribution.
Binomial probability disitribution.
Probability of exactly x sucesses on n repeated trials, with p probability.
Has an expected value of:
.
(a) Describe how you would simulate the number of seat belt wearing drivers among the five cars.
You would simulate this number finding the expected value of the binomial experiment.
There are 5 cars, so .
75% of all drivers wear their seat belts, so .
So the expected number of seat belt wearing drivers among the five cars is:
The expected number of seat belt wearing drivers among the five cars is 3.75, using the expected value of a binomial experiment.
Answer:
C
Step-by-step explanation:
First note that
Now use the property
so
Since
you have
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Answer:
Either B or D
Step-by-step explanation:
Answer:
She has 20 quarters.
Step-by-step explanation:
Alissa emptied her piggy bank for Disney world. She had $7.70.
If she had 10 pennies and twice as many times as quarters, then we can write the equation as
Q = 2P {Where, Q represents the number of quarters and P for pennies}
⇒ Q = 10 × 2
⇒ Q = 20
So, she has 20 quarters.
Therefore, she has 20 quarters. (Answer)