How do I do this? please help!

Deli Delivery delivers sandwiches to neighboring office bullding during lunch time in New York City. The dell claims that the sandwiches will be delivered within 24 minutes from recelving the order. Given the hectic schedules of their customers, consistent delivery time is a must. The owner has decided that the variance of delivery times should be close to 14.5 minutes squared. To determine how consistently the sandwiches are being delivered, the manager randomly selects 30 orders and measures the time from recelving the order to delivery of the sandwich. The average time to delvery of the sample was 22.5 minutes with a standard deviation of 4.4 minutes. Calculate the 80% Confidence Interval for the variance. (Round your answer to 2 decimal places.) AnswerHow to enter your answer (opens in new window) 2 Points Lower Confidence Limit: Upper Confidence Limit