Shelly recreated an experiment in which the probability of drawing a red card from a stack of red, blue, yellow, and purple cards is She draws a card, records it, replaces it, and then draws another card and continues this procedure 100 times. At the en?

**The rest of question: Shelly recreated an experiment in which the probability of drawing a red card from a stack of red, blue, yellow, and purple cards is She draws a card, records it, replaces it, and then draws another card and continues this procedure 100 times. At the end of her experiment she notices that she has drawn a red card 33 times. Which of the following statements is true about ...

**The rest of question: Shelly recreated an experiment in which the probability of drawing a red card from a stack of red, blue, yellow, and purple cards is She draws a card, records it, replaces it, and then draws another card and continues this procedure 100 times. At the end of her experiment she notices that she has drawn a red card 33 times. Which of the following statements is true about Shelly’s experiment?

A: Shelly’s deck of cards contains more red cards.
B: Shelly’s results are the same as the predicted results.
C: Shelly’s results are higher than the predicted results.
D: Shelly’s results are lower than the predicted results.**

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Mar 7, 2018

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C

Explanation:

I'm going to answer assuming that the probability of picking the red, blue, yellow, and purple cards are all equal (the word is missing in the question but I think we can infer that it was meant to be "equal").

We'd expect the results of picking the cards to all be equal over 100 draws, and so there should be 25 red, blue, yellow, and purple draws.

The actual results has red at 33.

Therefore C, Shelly's results are higher than predicted.

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