A music store holds a half-price sale on all cds. during the sale, people buy more cds than usual. what does this event show?
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Answer:
And the best option would be:
Step-by-step explanation:
We assume that the distribution for the random variable is:
For this case we want to calculate the following probability:
And we can use the normal standard distribution or excel and we got:
And the best option would be: