Four employees who work as drive-through attendants at a local fast-food restaurant are being evaluated. As part of a quality improvement initiative and employee evaluation, these workers were observed over three days. One of the statistics collected was the proportion of time the employee forgot to include a napkin in the bag. Also recorded was the proportion of all dinners packed by each employee. Related information is given in the table. What is the probability that there is not a napkin included for a given order?
A) 0.22
B) 0.24
C) 0.053
D) 0.015
E) 0.04

Question

Four employees who work as drive-through attendants at a local fast-food restaurant are being evaluated. As part of a quality improvement initiative and employee evaluation, these workers were observed over three days. One of the statistics collected was the proportion of time the employee forgot to include a napkin in the bag. Also recorded was the proportion of all dinners packed by each employee. Related information is given in the table.  What is the probability that there is not a napkin included for a given order?
A) 0.22 
B) 0.24 
C) 0.053 
D) 0.015 
E) 0.04

Quizplus · Accepted Answer

P(No Napkin) = (.25)(.06) + (.20)(.02) + (0.20)(.10) + (.35)(.04) = .053

Four Employees Who Work as Drive-Through Attendants at a Local