Question

	In favor	Not in favor	Not sure	Total
Northeast	168	129	30	327
Midwest	169	184	20	373
South	172	123	10	305
West	180	119	50	349
Total	689	555	110	1354

1. What is the probability that a person surveyed lived in the south?

2. How many people were surveyed?

3. What is the probability that a person surveyed was from the northeast or midwest?

4. Given that the person is from the midwest, what is the probability that a person survey was not in favor of the death penalty?

5. What is the probability that a person surveyed lived in the west or was not sure about the death penalty?

6. What is the probability that a person surveyed was in favor of and not sure about the death penalty?

7. What is the probability that person surveyed was not in favor of the death penalty and lived in the northeast?

8. what is the probability that a person surveyed was in favor of the death penalty?

Answer 1

1.

Total people in south = 305

Total people = 1354

Probability = 305/1354 = 0.2253

2.

Total people = 1354

3.

northeast or midwest = 327 + 373 = 700

Total people = 1354

Probability = 700/1354 = 0.5167

4.

P( Not in favour | Midwest ) = P( Not in favour and Midwest ) / P(Midwest )

= 184 / 373 = 0.4933

5.

Probability ( lived in the west or was not sure ) = (349 + 110 - 50 ) / 1354 =0.3021

6.

Probability ( in favor of and not sure ) = 0

7.

Probability ( not in favor and lived in northeast ) = 129 /1354 = 0.0953

8.

Probability ( In favor of death penalty ) = 689 / 1354 = 0.5089