Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Over the last year, a company that manufactures golf clubs has received numerous complaints about the performance of its graphite shafts and has lost several market share percentage points. In response, the company decided to monitor its shaft production process to identify new opportunities to improve its product. The process involves pultrusion. A fabric is pulled through a thermosetting polymer bath and then through a long heated steel die. As it moves through the die. the shaft is cured. Finally, it is cut to the desired length. Defects that can occur during the process are internal voids, broken strands, gaps between successive layers, and micro cracks caused by improper curing. The company's newly formed quality department sampled 10 consecutive shafts every 30 minutes and nondestructive testing was used to seek out flaws in the shafts. The data from each eight-hour work shift were combined to form a shift sample of 160 shafts. Data on the proportion of defective shafts for 36 shift samples arc presented in the table on page 698, followed by data on the types of flaws identified. [Note: Each defective shaft may have more than one flaw.
a. Use the appropriate control chart to determine whether the process proportion remains stable over time
b. Does your control chart indicate that both common and special causes of variation are present? Explain.
c. To help diagnose the causes of variation in R rocess output, construct a Pareto diagram for the types of shaft defects observed. Which are the "vital few"? The "trivial many"?
in a survey of 500 u.s. adults 45 of them said that lounging at the beach was their dream vacation assuming this to be
in a remote tropical region there is a direct road from a to b but it is impassable about 50 of the time due to rain.
The airline must sell 150 seats to break even on this particular flight. On what percent of the flights does the airline make money?
Standard deviation was 16. Determine the 99% confidence interval of true mean. Suppose the variable is normally distributed.
suppose you want to estimate the proportion of people in your community who would choose thin mints as their favorite
Compute the z-score for M = 89 for a sample of n = 25 scores. Is this sample mean in the middle 95% of the distribution?
A sample of 64 Atlanta consumers showed a mean quarterly water bill of $51 with a sample standard deviation of $12. At α = .05, does the Atlanta sample support the conclusion that above-average rates exist for this private water system?
Select a second sampling technique for the same hypothesis and give a second detailed design of how you would gather sampling data.
Compute the indicated confidence interval for the differenciate in proportions. Suppose that the samples are independent and that they have been randomly selected.
question two fair dice one red and one green. are rolled. let the event a be the sum of the faces showing is equal to
A game involving a pair of dice pays out $4 with probability 16/36, costs you $2 with probability 14/36, and costs you $6 with probability 6/36.
a histogram showing the different responses from five groups of government employees is used in a report to emphasize
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd