Please help me, A question like this is going to be on my test next week.?

Through a telephone survey, a low-interest bank credit card is offered to 400 households. The responses are as tabled.

Income ? $40,000Income %26gt; $40,000

Accept offer4030

Reject offer210120

a)(7 pts) If someone who accepted the offer is selected at random, what is the probability that he earns at least $40,000?

b)(7 pts) What is the probability that one of the respondents, selected at random, accepted the offer?

Please help me, A question like this is going to be on my test next week.?military loans

aI%26#039;m assuming that you meant to put a %26lt; sign where there is that little square:

a.) So we know that 40 + 30 accepted the offer:

70 people accepted the offer and 30 of them make more than 40000, so the probability that a person makes more than 40000 is: (people that make more than 40000) divided by (total number of people who accepted the offer).

In this case, the answer is: 30/70, which is 3/7. The probability is 3/7.

b.) So, there were 400 total respondents, and 70 of them accepted the offer:

So the probability one of them accepted the offer is:

(the number of people who accepted the offer) divided by (the total number of respondents).

The answer in this case is:

70/400= 7/40

Please help me, A question like this is going to be on my test next week.?

loan

a) 30/70 = 3/7

b) 70/400 =7/40|||I assume you want to know how to figure this out and not just the answer.

a) (you have to change the %26#039;at least%26#039; to %26#039;more than%26#039; to be able to do this)

70 people accepted the offer

30 of them were %26gt;40K

so the probability is 30/70 or .429 or 42.9%

b) 70 people out of 400 accepted the offer

so the probabilty is 70/400 or .175 or 17.5%