How much does sleeping bag cost? Let's say you want sleeping bag that must keep you warm in temperature's from 20ºF to 45ºF. A random sample of prices ($) for sleeping bags in this temperature range was taken from magazine. 93 106 86 109 81 111 118 117 118 116 For such sample data, the mean is [xbar] ? 105.50 and sample standard deviation is s ? 13.88. Using the given data as representative of population of prices of all summer sleeping bags, determine a 95% confidence interval for the mean price µ of all summer sleeping bags. Round your answer to two decimal places.
a. 81.02 to 106.78
b. 92.62 to 115.43
c. 92.62 to 106.78
d. 95.57 to 115.43
e. 95.57 to 106.78