Module 7 - Applied Probability

A coin has two sides: heads and tails. If three coins are tossed, what is the probability of getting an odd number of heads?

• 5/8

• 1/4

• 1/2

• 3/8

A coin has two sides: heads and tails. If three coins are tossed, what is the probability of getting exactly two heads?

• 3/8

• 1/4

• 1/2

• 5/8

Tags

CCSS.HSS.CP.B.9

A company receives equipment from two factories: 38% from factory A, and all other equipment from factory B. Each factory has a percentage of equipment that is defective: 1% of factory A's equipment is defective, while 4% of factory B's equipment is defective. If a piece of the company's equipment is selected at random, what is the probability that it is defective and from factory B?

• 0.0038

• 0.0248

• 0.6012

• 0.6600

A company sources its products from two suppliers: 45% from supplier X, and the rest from supplier Y. Each supplier has a certain percentage of products that are faulty: 2% of supplier X's products are faulty, while 5% of supplier Y's products are faulty.

If a product is chosen at random from the company's inventory, what is the probability that it is faulty and from supplier Y?

• 0.0090

• 0.0275

• 0.5500

• 0.9500

At a local car dealership, the probability of selling a car before 11:00 a.m. on a weekday is 0.15. What is the probability of not selling a car before 11:00 a.m. on a weekday?

• 0.75

• 0.90

• 0.80

• 0.85

Tags

CCSS.HSS.CP.B.7

At a local electronics store, the probability of selling a television before 2:00 p.m. on a weekday is 0.25. What is the probability of not selling a television before 2:00 p.m. on a weekday?

• 0.65

• 0.85

• 0.75

• 0.55

Tags

CCSS.HSS.CP.B.7

A marketing company chooses a survey participant among two respondents: one female and one male. The chosen participant is then asked to rate either product A, B, or C. What is the probability that the respondent was male and rated product B?

• 0.167

• 0.333

• 0.833

• 0.500

The probability of a breakdown on assembly line A is 12%. The probability of a breakdown on assembly line B is 16%. The probability that both assembly lines break down is 2%. What is the probability that assembly line A or assembly line B break down?

• 0.28

• 0.26

• 0.30

• 0.24

Tags

CCSS.HSS.CP.B.7

A bag contains 8 red, 4 green, and 9 blue marbles. One marble is drawn from the bag, not replaced, and then a second marble is drawn. Which statement is always correct?

• If the first marble drawn is red, then the probability that the second marble drawn is also red is 7 over 21 is equal to 1/3.

• If the first marble drawn is red, then the probability that the second marble drawn is also red is 7 over 21.

• If the first marble drawn is red, then the probability that the second marble drawn is also red is 7/20.

• The probability that the second marble drawn is red is 7/20.

Tags

CCSS.HSS.CP.B.6

A retail store wants to determine the probability that a customer noticed a promotion either in their email newsletter or on a billboard. They discovered that 42% of customers saw the promotion in the email, 25% saw it on the billboard, and 15% saw it in both the email and on the billboard. What is the probability that a randomly chosen customer saw the promotion in the email or on the billboard?

• 52%

• 67%

• 82%

• 35%

Tags

CCSS.HSS.CP.B.7