Cociolto
2 points
at a hardware store, the probability that a customer buys nails is 0.10. the
probability that a customer buys nails given that the customer buys a
hammer is 0.40.
which statement is true?
o
a. every customer who buys nails also buys a hammer.
o
b. buying a hammer and buying nails are independent events.
o
c. buying a hammer and buying nails are dependent events.
o
d. the probability that a customer buys a hammer and nails is 0.30.
submit

The answer is C

Step-by-step explanation:

Option C is correct.

Step-by-step explanation:

C. Buying a hammer and buying nails are dependent events. - This is correct.

Two events are said to be dependent on each other, if the occurrence of the first event affects the occurrence of the second event thus changing the probability. Here the probability for both the events is

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2