Potential products are more likely to be developed by salespeople who regularly interact with customers

A store which groups female clothing into juniors', misses', and ladies' has classified those departments by _____ product groupings

a. storability b. purchase motivation c. functional d. market segment

A time study of a certain service task found an average time of 15 minutes, with a standard deviation of 5 minutes. These figures were based on a sample of 100 measurements

Is the sample large enough that we are 95% confident that standard time is within ±5% of its true value?