The manager of a bookstore with a coffee shop wants to know the proportion of customers that come into the store because of the coffee shop. A random sample of 75 customers was polled. calculate the value of p^ ? . Upper bound for 95% confidence interval = ? Lower bound for 95%

confidence interval = ?

The manager can say with 95% confidence that the true population proportion of the customers that come into the store because of the coffee shop is in the interval ( , ) ?

Use these numbers to help finding the answers:

-for the confidence level at .90 z* = 1.645

-for the confidence level at .95 z*= 1.960

-for the confidence level at .99 z*= 2.576