Question 2 Each year, Nordstrom sets up a gift-wrapping station to assist its customers with holiday shopping. Preliminary observations of one worker at the station produced the following sample time (in minutes per package): 3.5, 3.2, 4.1, 3.6, 3.9. 25 pts Based on this small sample, what number of observations would be necessary to determine the true cycle time with a 95% confidence level and an accuracy of ? Required sample size = n = ZS hx

Each year, Nordstrom sets up a gift-wrapping station to assist its customers with holiday shopping. Preliminary observations of one worker at the station produced the following sample time (in minutes per package): 3.5,3.2,4.1,3.6,3.9. Based on this small sample, what number of observations would be necessary to determine the true cycle time with a 95% confidence level and an accuracy of ? Required sample size =n=(hxzs)2