AP Stats: Probability

A friend has placed a large number of plastic disks in a hat and invited you to select one at random.  He informs you that half are red and half are blue.  If you draw a disk, record the color, replace it, and repeat 100 times, which of the following is true?

• It is unlikely you will choose red more than 50 times.
• If you draw 10 blue disks in a row, it is more likely you will draw a red on the next try.
• The overall proportion of red disks drawn should be close to 0.50.
• The chance that the 100th draw will be red depends on the results of the first 99 draws.

Tags

CCSS.HSS.CP.A.1

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

People with type O-negative blood are universal donors.  That is, any patient can receive a transfusion of O-negative blood.  Only 7.2% of the American population has O-negative blood.  If 10 people appear at random to give blood, what is the probability that at least 1 of them is a universal donor?

• 0
• 0.280
• 0.526
• 0.720

Tags

CCSS.HSS.CP.A.1

CCSS.HSS.CP.B.7

CCSS.HSS.CP.B.9

The probability of scoring a 100% on the midterm is 2%.  The probability of scoring a 90% to 99% on the midterm is 3%.  The probability of scoring an 80% to 89% is 10%.  What is the probability that a student will not earn an A or a B on the midterm?

• .00006
• .15
• .85
• .86

Tags

CCSS.HSS.CP.A.1

What is the probability that a student does not play on a sports team? 

• .5
• .45
• .55

Tags

CCSS.HSS.CP.A.1

CCSS.HSS.ID.B.5

CCSS.HSS.CP.B.7

What is the probability that a student does play a sport given they do not play an instrument? 

• .2
• .2222
• .10
• .5

Tags

CCSS.HSS.CP.A.3

CCSS.HSS.CP.B.6

CCSS.HSS.CP.A.4

CCSS.HSS.ID.B.5

A new credit card has been issued to 2000 customers. Of these customers, 1500 hold a Visa, 500 hold an AA card, and 40 hold a Visa and AA card. Find the probability that a random chosen customer holds an AA, given they hold a Visa.

• .0267

• 37.5

• .02

• .3333

Tags

CCSS.HSS.CP.A.3

CCSS.HSS.CP.B.6

What statement does the shaded region represent?

• A or B
• A and B
• A
• B

Tags

CCSS.HSS.CP.A.1

What statement does the shaded region represent

• A or B
• Not A
• A and B
• Not B

Tags

CCSS.HSS.CP.A.1

What statement does the shaded region represent?

• A or B
• Not B
• Not A
• Not A or B

Tags

CCSS.HSS.CP.A.1

What statement does the shaded region represent?

• A and B and C
• A or B and C
• B and C
• A or C

Tags

CCSS.HSS.CP.A.1