Solve the problem.
The probability is 0.2 that a person shopping at a certain store will spend less than $20. For groups of size 17, find the mean number who spend less than $20.
(1 point)
Responses
16.0
16.0
13.6
13.6
3.4
3.4
4.0
To solve this problem, we use the formula for the mean of a binomial distribution:
Mean = n * p
Where:
- n is the size of the group (17)
- p is the probability of the event occurring (0.2)
Mean = 17 * 0.2 = 3.4
Therefore, the mean number of people who spend less than $20 in a group of size 17 is 3.4.