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

How many 5-digit (numerical) passwords are possible for the school email system if the first digit cannot be 0?

• 11,424,400
• 10,967,424
• 9000
• 90,000

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

An algebra 2 test has 6 multiple choice questions with four choices with one correct answer each. If we just randomly guess on each of the 6 questions, what is the probability that you get exactly 3 questions correct? (You need to figure out the p value first. It is not given to you.)

• 0.962
• 0.132
• 0.831
• 0.250

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

Choose an American household at random. What is the expected number of cars for that household?

• 1.75
• 1.84
• 2.00
• 2.50

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

HINT: Read carefully! And think about the TOTAL amount of money being gained or lost in each situation!

• $275
• $625
• $2,750
• $6,250

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

The number of suitcases lost by airlines. 

• Discrete
• Continuous

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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

The probability of getting exactly two heads in toss of two coins together

• 1/2

• 2/3

• 1/4

• 3/4

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

Choose an American household at random. What is the expected number of cars for that household?

• 1.75
• 1.84
• 2.00
• 2.50

Tags

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

Given the probability model in the table below, what is the expected value of the random variable?
  X        50          20        5
P(X)     0.1         0.3      0.6

• 14
• 4.67
• 5
• 7.5

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