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 mean or average of breakdowns per week.
Mean = (Sum of observations) / (Total number of observations)
Sum of observations = 5 + 4 + 5 + 1 + 3 + 2 + 1 + 4 + 2 + 2 + 1 = 30
Total number of observations = 11
Mean = 30 / 11 ≈ 2.73
Rounded to the nearest whole number, the expected number of breakdowns per week is 2. Therefore, the best choice is B.

DuLarge Marine Manufactures Diesel Engines for Shrimp Trawlers and Other