DuLarge Marine manufactures diesel engines for shrimp trawlers and other small commercial boats.One of their CNC machines has caused several problems.Over the past 30 weeks,the machine has broken down as indicated below. What is the expected number of breakdowns per week?

Question

DuLarge Marine manufactures diesel engines for shrimp trawlers and other small commercial boats.One of their CNC machines has caused several problems.Over the past 30 weeks,the machine has broken down as indicated below.  What is the expected number of breakdowns per week?

Quizplus · Accepted Answer

To find the expected number of breakdowns per week, we need to calculate the average breakdowns per week based on the data given.

From the data, we can calculate the mean by adding up the number of breakdowns and dividing by the number of weeks:
(3+4+2+4+2+2+1+2+2+2+3+2+4+2+1+2+1+1+2+1+2+2+3+0+0+0+1+1+2+1)/30 = 2

Therefore, the expected number of breakdowns per week is 2. The best choice is B.

DuLarge Marine Manufactures Diesel Engines for Shrimp Trawlers and Other