CCSS.Math.Content.HSS.MD.A.1

A marketing survey compiled data on the number of cars in households.  If X = the number of cars in a randomly selected household, and we omit the rare cases of more than 5 cars, then X has the following probability distribution: 
X           0          1          2          3           4           5    
P(X)   0.24    0.37    0.20    0.11    0.05     0.03
What is the probability that a randomly chosen household has at least two cars?

• 0.20
• 0.29
• 0.39
• 0.61

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CCSS.Math.Content.HSS.MD.A.1

Is this a probability distribution?

• No
• Yes

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CCSS.Math.Content.HSS.MD.A.1

Discrete or Continuous?

• Discrete
• Continuous

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CCSS.Math.Content.HSS.MD.A.1

Adam earns $10 for each car he washes.

• Discrete
• Continuous

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CCSS.Math.Content.HSS.MD.A.1

The number of books in your locker.

• Continuous
• Discrete

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CCSS.Math.Content.HSS.MD.A.1

The time it takes for a light bulb to burn out.

• Continuous
• Discrete

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CCSS.Math.Content.HSS.MD.A.1

The cost of your lunch at Burger King.

• Continuous
• Discrete

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CCSS.Math.Content.HSS.MD.A.1

Which of the following is true about every random variable

• It takes on numerical or categorical values.
• It describes the results of a random phenomenon.
• It’s behavior can be described by a probability distribution.
• (b) and (c) are true, but not (a).

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CCSS.Math.Content.HSS.MD.A.1

In government data, a family consists of two or more persons who live together and are related by blood or marriage. Choose an American family at random and count the number of people it contains. What is the probability that the family you choose has
more than 2 people?

• 0.35
• 0.42
• 0.58
• 1.00

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CCSS.Math.Content.HSS.MD.A.1

Find 25% of 160 km

• 40 km
• 80 km
• 16 km
• 20 km

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CCSS.Math.Content.HSS.MD.A.1