The owner of Touchdown Sports Bar wants to develop a time standard for the task of mixing a specialty cocktail. In a preliminary study, he observed one of his bartenders perform this task seven times with an average of 90 seconds and a standard deviation of 5 seconds.
What is the normal time for this task if the bartender worked at a 20 percent faster pace than is average?
A)75 seconds
B)90 seconds
C)108 seconds
D)110 seconds
E)112.5 seconds

Question

Quizplus · Accepted Answer

The normal time is calculated by adjusting the observed time for the pace of work. Since the bartender worked 20% faster, the normal time is 90 seconds / 1.2 = 75 seconds. However, the correct choice should reflect the normal time without the pace adjustment, which is 90 seconds * 1.2 = 108 seconds.

The Owner of Touchdown Sports Bar Wants to Develop a Time