# Question: Refer to Exercise 43 and answer the following questions a

Refer to Exercise 43 and answer the following questions:

a. Quality control inspectors reject any part with a diameter less than 118 mm or more than 132 mm. What percentage of the parts is rejected?

b. Suppose your engineers could reduce the variation in diameters. Specifically, suppose they can reduce the standard deviation of the diameter distribution to 3.5 mm. Given the limits described in a, what percentage of the parts would be rejected?

c. Suppose you want to reduce the percentage of rejected parts to 1%. What would the standard deviation of the diameter distribution have to be to meet this goal?

a. Quality control inspectors reject any part with a diameter less than 118 mm or more than 132 mm. What percentage of the parts is rejected?

b. Suppose your engineers could reduce the variation in diameters. Specifically, suppose they can reduce the standard deviation of the diameter distribution to 3.5 mm. Given the limits described in a, what percentage of the parts would be rejected?

c. Suppose you want to reduce the percentage of rejected parts to 1%. What would the standard deviation of the diameter distribution have to be to meet this goal?

## Answer to relevant Questions

Basset’s Liquid Filler III is a machine that falls containers with a preset amount of semi-liquid product that will be used in its plastics molding process. The average fill weight for the machine can be set and ...The waiting time for customers who place an order at Quick-n-Tasty Chicken is exponentially distributed, with an average waiting time of 2.5 minutes. How likely is it that a customer will wait? a. At least 3 minutes? b. ...Use the standard normal table in Appendix A to find the area a. above (that is, to the right of) a point that’s 1.96 standard deviations below the mean. b. in an interval starting 1.36 standard deviations to the right of ...Koufos Imports wants to estimate the average value of its current accounts receivable. In all, there are 2000 accounts. A simple random sample of 40 accounts is selected. The average amount due the firm in the sample is ...Five companies make up the steel industry in the US. Last year’s sales for each of the companies (in $millions) are shown below: a. Show all 10 equally likely samples of size three that could be selected from this company ...Post your question