CCSS.Math.Content.HSS.MD.A.3

The table represents the probability of guessing correct on a 5 question true-false quiz. Find the mean number of questions one gets correct when guessing.

• 2.5
• 3
• 3.5
• 1.5

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CCSS.Math.Content.HSS.MD.A.3

Which is the best way to represent answering 25 multiple-choice questions with 4 choices for each answer?

• spin a spinner with four sections 25 times
• roll a die 25 times
• flip a coin 25 times
• roll a die 4 times

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CCSS.Math.Content.HSS.MD.A.3

The chart below represents the number of marbles in a jar.
P(green) = 

• 5/19
• 10/28
• 5/14

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CCSS.Math.Content.HSS.MD.A.3

Find the expected value. READ CAREFULLY!

• 4.5
• 25.5
• 3.825
• 6.52

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CCSS.Math.Content.HSS.MD.A.3

Which option gives the greatest Return on Investment?

• Option I
• Option II
• Option III
• It doesn't make a difference

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CCSS.Math.Content.HSS.MD.A.3

Decide whether the distribution is a probability distribution.

• Yes, it is a discrete probability distribution.
• No, it is not a discrete probability distribution.

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CCSS.Math.Content.HSS.MD.A.3

The table represents the probability of guessing correct on a 5 question true-false quiz. Find the mean and the standard deviation.

• μ = .4; σ = 7.5

• μ = 2.5; σ = 1.1

• μ = 3; σ = 1.3

• μ = .1; σ = 0

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CCSS.Math.Content.HSS.MD.A.3

Identify whether the experiment involves a discrete or a continuous random variable.

tossing a pair of fair coins

• Discrete Random Variable

• Continuous Random Variable

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CCSS.Math.Content.HSS.MD.A.3

A student group sells 500 raffle tickets for $2 each. At the drawing the top prize will be a gift certificate for $100. Second prize will be a $50 gift card and there will be five 3rd prizes, each a $20 gift card. Do you expect to win or lose (on average)? How much?

• lose an average of $5.50

• lose an average of $1.50

• win an average of $2.00

• lose an average of $10.00

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CCSS.Math.Content.HSS.MD.A.3

Same MISSISSIPPI bag of tiles. What is the theoretical probability of P(S)? Simplified fraction form

• 1/11

• 2/11

• 6/5

• 4/11

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CCSS.Math.Content.HSS.MD.A.3