UTMA Probability 2

Question 1

A card is drawn from a standard 52-card deck. What is the probability of drawing a king?

Accepted Answer

1/13

Answer

1/52

Answer

4/52 simplified to 1/13

Answer

2/13

Question 2

If P(A) = 0.5, P(B) = 0.4, and P(A and B) = 0.2, what is P(A or B)?

Accepted Answer

0.7

Answer

0.9

Answer

0.2

Answer

1.1

Question 3

In how many ways can 3 items be chosen from 7 (order does not matter)?

Accepted Answer

35

Answer

21

Answer

42

Answer

210

Question 4

Two events A and B are independent. If P(A) = 0.3 and P(B) = 0.5, what is P(A and B)?

Accepted Answer

0.15

Answer

0.8

Answer

0.2

Answer

0.35

Question 5

A box has 3 defective and 7 non-defective bulbs. What is the probability of drawing 2 non-defective bulbs in a row (without replacement)?

Accepted Answer

7/15

Answer

49/100

Answer

42/90

Answer

6/10

Question 6

What is the expected value if you win $10 with probability 0.3 and lose $5 with probability 0.7?

Accepted Answer

−$0.50

Answer

$3.00

Answer

−$1.50

Answer

$1.50