Answer to Question #6182 in Statistics and Probability for Marilyn Davis
Let x- random variable, which represents amount of couples who paid for their honeymoon themselves.
Probability that couple paid for themselves= 0.7
That they doesn’t 0.3
We can use Bernulli’s formula here . Let’s recall it:
where n-number of trials
k-number of successes
n-k – number of failures
p-probability of success in one trial
(1-p) – probability of failure in one trial
We have n=20 trials and each of them has two possible outcomes (paid themselves or not paid themselves) with probabilities p=0.7 and q=1-p=0.3
So we have due to Bernulli’s formula:
b) more than one
c) at most one
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