The price of a head of iceberg lettuce varies greatly with the season and the geographic location of a store. During February a researcher contacts a random sample of 39 grocery stores across Australia and asks the produce manager of each to state the current price charged for a head of iceberg lettuce. Using the researcher's results that follow, construct a 99% confidence interval to estimate the mean price of a head of iceberg lettuce in February in Australia. What is the upper estimate value?

Assume that is 0.205.Round the answers to 3 decimal places.

1.59	1.25	1.65	1.40	0.89
1.19	1.50	1.49	1.30	1.39
1.29	1.60	0.99	1.29	1.19
1.20	1.50	1.49	1.29	1.35
1.10	0.89	1.10	1.39	1.39
1.50	1.50	1.55	1.20	1.15
0.99	1.00	1.30	1.25	1.10
1.00	1.55	1.29	1.39