Try it on paper first. A hint, the key idea and the worked solution are here when you need them.
Five cards are drawn from a standard pack of cards. Let be the number of hearts among them. Find the probability that when each card is put back and the pack is shuffled before the next draw. Then find the probability that when the cards are not put back. Finally find the difference between the two answers. Give decimals to four places. The pack has hearts and other cards. For the case without replacement, count hands: choose of the hearts and of the other cards, out of all hands of cards.
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. With replacement. The draws are independent, so . .
Step 2. Without replacement. , and . So .
Step 3. The difference. .
Answer: , and .
What it means. The two answers are close, because the sample is cards from a pack of , a small part of the pack. They are not equal, because without replacement the draws are not independent.
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For independent trials with success probability and , , with mean and variance . Check the four conditions first: fixed , two outcomes, the same , independent trials.