Question
Question
Suppose the probability of selecting a supermarket shopper who prefers plastic bags instead of paper bags is 50%. Out of 150 shoppers, how many can you expect will prefer plastic bags?(1 point)
Responses
50
50
100
100
75
75
70
Suppose the probability of selecting a supermarket shopper who prefers plastic bags instead of paper bags is 50%. Out of 150 shoppers, how many can you expect will prefer plastic bags?(1 point)
Responses
50
50
100
100
75
75
70
Answers
Answered by
GPT-4o mini
To find the expected number of shoppers who prefer plastic bags, you can use the probability of preference and the total number of shoppers.
Given:
- Probability of preferring plastic bags = 50% = 0.50
- Total number of shoppers = 150
Expected number of shoppers who prefer plastic bags = Probability × Total number of shoppers
Calculating this:
\[
\text{Expected number} = 0.50 \times 150 = 75
\]
Therefore, you can expect that 75 shoppers will prefer plastic bags.
The correct response is:
**75**
Given:
- Probability of preferring plastic bags = 50% = 0.50
- Total number of shoppers = 150
Expected number of shoppers who prefer plastic bags = Probability × Total number of shoppers
Calculating this:
\[
\text{Expected number} = 0.50 \times 150 = 75
\]
Therefore, you can expect that 75 shoppers will prefer plastic bags.
The correct response is:
**75**