The city bus station runs buses every 15 minutes. find the probability that a passenger who arrives at a random time will not have to wait more than 5 minutes.
a.
1/3
b.
2/5
c.
3/5
d.
2/3

3/4 = c/36 i need with this fraction proble.

Ineed to know how to write question one in mathematical terms

Now, martin can reasonably guess that the standard deviation for the entire population of people at the mall during the time of the survey is $1.50. what is the 95% confidence interval about the sample mean? interpret what this means in the context of the situation where 95 people were surveyed and the sample mean is $8. use the information in this resource to construct the confidence interval.