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Mkey [24]
3 years ago
8

Greg has four different colored cards in a box. Yellow, red, blue, and green. He randomly selects one card, records the color, a

nd then replaces the card into the box. If Greg does this 300 times, how many yellow cards should he expect to select?
Mathematics
1 answer:
Veronika [31]3 years ago
6 0

Answer:

He should expect to select 75 yellow cards.

Step-by-step explanation:

Since there is replacement, for each trial, we have:

1 yellow card

1 red card

1 blue card

1 green card.

If Greg does this 300 times, how many yellow cards should he expect to select?

Each trial, there are 4 cards, one of which is yellow. So 1/4 = 0.25 probability of selecting a yellow card.

Over 300 trials

0.25*300 = 75

He should expect to select 75 yellow cards.

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