Pls help me with this solve 5 thro 6 and 4
2 answers:
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Answer:
$19575
$20945.25
Step-by-step explanation:
The current price of the car is $43500 but if I wait for 18 months, then it will be 55% cheaper.
So, the after 18 months the price of the car will be dollars.
If sales tax is 7%, then the total price of the car after waiting for 18 months will be dollars. (Answer)
Answer:
5.96% probability that exactly 3 people in the sample are afraid of being alone at night.
Step-by-step explanation:
For each person, there are only two possible outcomes. Either they are afraid of being alone at night, or they are not. The probability of a person being afraid of being alone at night is independent of any other person. 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.
5% of Americans are afraid of being alone in a house at night.
This means that
If a random sample of 20 Americans is selected, what is the probability that exactly 3 people in the sample are afraid of being alone at night.
This is P(X = 3) when n = 20. So
5.96% probability that exactly 3 people in the sample are afraid of being alone at night.