Blog

A process characteristic follows a normal distribution with a mean of 25.15 and standard deviation of 0.9.  The spec limits for the characteristic are 25.00 +/- 1.5.   If a sample of 8 parts are taken from the process, what is the probability that there will be no parts out of spec in the sample?

Historically, 20% of flights from major carrier arrive at the designation late.  A frequent flyer takes 12 flights in the month of July.  What is the probability that the exactly 3 of the flights were late?

In a 5 lb bag are 20 small apples.  4 of the apples in the bag are badly bruised.  If 3 apples are drawn at random, what is the probability that exactly 1 of them is badly bruised?

A process characteristic has a mean of 140 and standard deviation of 5.5.  Above what value will 80% of the observations fall?

In considering the cost of quality, which of the following would be NOT be considered an activity associated with external failure costs?

In considering the cost of quality, which of the following would be considered an internal failure cost?

A large distribution center of a package delivery company had an average of 2.5 major conveyor jams in each sort.  (A sort is when the semi-trucks bring packages to the facility and they are sorted to put into vehicles going to other centers or the final customer.  The sort uses a massive number of conveyors.)  The center runs 3 sorts per day.  Assuming the number of major jams follows a Poisson distribution, what is the probability of having exactly 4 major jams on a day?

In the following stem and leaf plot of 24 data observations, what is the median value of the data? (leaf data is after the decimal point) 7    |  234 8    |  0578 9    |  234599 10 |  04578 11 |  146 12 |  9 13 |  6 14 |  15 |  1

A call center gathers information on the number of data entry errors and determines the percent of defective transactions. The type of numeric data that the company is using is

I will not share any information on questions on this exam other students in this class or with students in future classes.