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In a large university, 15% of the students are female. If a random sample of twenty students is selected,
a. what is the probability that the sample contains exactly four female students?
b. what is the probability that the sample will contain no female students?
c. what is the probability that the sample will contain exactly twenty female students?
d. what is the probability that the sample will contain more than nine female students?
e. what is the probability that the sample will contain fewer than five female students?
f. what is the expected number of female students?
Scratch-and-Save
A promotional discount method where customers scratch a card to reveal a discount or prize.
Profit
The financial gain realized when the revenue generated from a business activity exceeds the expenses, costs, and taxes involved in sustaining the activity.
Rate of Markdown
The percentage decrease from the original price to the sale price.
Operating Expenses
Costs associated with the day-to-day operations of a business or organization.
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