# Question

A factory manager collected data on the number of equipment breakdowns per day. From those data, she derived the probability distribution shown in the following table, where W denotes the number of breakdowns on a given day.

a. Determine μW and σW.

b. On average, how many breakdowns occur per day?

c. About how many breakdowns are expected during a 1-year period, assuming 250 work days per year?

a. Determine μW and σW.

b. On average, how many breakdowns occur per day?

c. About how many breakdowns are expected during a 1-year period, assuming 250 work days per year?

## Answer to relevant Questions

Reporter D. McGinn discussed the changing demographics for successful chief executive officers (CEOs) of America's top companies in the article, "Fresh Ideas" (Newsweek, June 13, 2005, pp. 42-46). The following frequency ...Determine the value of each of the following binomial co-efficients a. b. c. d. If we repeatedly roll a balanced die, then, in the long run, it will come up "4" about one-sixth of the time. But what is the probability that such a die will come up "4" exactly once in six rolls? According to the Centers for Disease Control and Prevention publication Health, United States, in 2002, 16.5% of persons under the age of 65 had no health insurance coverage. Suppose that, today, four persons under the age ...As reported by the Federal Bureau of Investigation in Crime in the United States, the age distribution of murder victims between 20 and 59 years old is as shown in the following table. Age (yr) Frequency 20–24 ...Post your question

0