A local company wants to evaluate their quality of service b

A local company wants to evaluate their quality of service by surveying their customers. Their budget limits the number of surveys to 97. What is their maximum error of the estimated mean quality for a 94% level of confidence and an estimated standard deviation of 5? 1.3149 0.8377 0.9661 0.9544

Solution

Answer is 0.9544

Here SE = 5/Sqrt(75) = 0.5076

Z value corresponding 94% level = 1.8807

maximum error of the estimated mean = 1.8807*0.5076