Question

The Pizza Shop wanted to determine what proportion of its customers ordered only cheese pizza. Out of 80 customers surveyed, 15 ordered cheese pizza. They want a 99% confidence interval of the true proportion of customers who order only cheese pizza.

Which type of confidence interval should we use here?
Question 25 options:

a confidence interval for the mean using a table value from the standard normal distribution.

a confidence interval for the mean using a table value from the t distribution.

a confidence interval for a proportion using a table value from the standard normal distribution.

a confidence interval for proportion using a table value from the t distribution.

Answer 1

We should use a confidence interval for a proportion using a table value from the standard normal distribution.