Please answer 4.17 CONCEPTSSTATISTICAL4.11. Which of the following continuous distributionsis symmetrical and unskewed over its typicaloperating range?a. Normalb. Weibullc. Lognormald. Exponential4.12. The means of large samples from a populationwith finite variance tend to be normallydistributed around the population mean. Thisstatement is true according to which of thefollowing theorems?a. Central limitb. Camp-Meidelc. Tchebysheff'sd. Least squares4.13. If f(t), R(t), and h(t) denote the failure timedensity function, reliability function, and hazard-rate function of a device, which one of thefollowing expressions is true?R(t)=exp[-Jh(s)ds]a.b. h(t)=-=[hR(t)]h(t)c. f(t)= R(1)d. h(t)= R(s)ds4.14. A new refrigerator has a probability of workingcorrectly when it is first plugged in of 0.985.The probability that it will be delivered to theperson's home with no dents is 0.947. What isthe probability that it will arrive with no damage,and will work the first time?a. 0.932b. 0.933c. 0.985d. 0.9994.15. A process is in control at X-double bar = 100, R--bar = 7.3 with n = 4. If the process level shifts to101.5, with the same R-bar, what is theprobability that the next X-bar point will falloutside the old control limits?4.16.4.17.4.18.Page Which principle underlies the effectiveness ofreliability control charting?a. The samples are randomly selectedb. The samples are heterogeneousc. The process shows design immaturityd. For reliability applications, the failure rate iserraticA plastics plant operates 8 extruders producingplastic film. Production volume requirementscannot be met if fewer than 6 extruders areoperating. There is a 0.30 probability that amachine stopping malfunction will occur. Whatis the probability that at least 6 extruders canremain operating throughout the day?a. 0.5783b. 0.4482c. 0.5518d. 0.80594.19. The sample size needed for hypothesis testing:a. Depends upon the proportion rateb. Can be determinedc. Requires a known censor pointd. Indicates that a confidence level andreliability must be provided4.20. In 1000 trials, independent, with the sameprobability of failure at each trial, 50 failures.were observed.Upper and lower 90%(symmetrical 80%) confidence limits on thereliability are:a. 0.96- 0.94b. 0.980.92c. 0.99-0.96d. 1.00 -0.95of

Question

Please answer 4.17 CONCEPTSSTATISTICAL4.11. Which of the following continuous distributionsis symmetrical and unskewed over its typicaloperating range?a. Normalb. Weibullc. Lognormald. Exponential4.12. The means of large samples from a populationwith finite variance tend to be normallydistributed around the population mean. Thisstatement is true according to which of thefollowing theorems?a. Central limitb. Camp-Meidelc. Tchebysheff'sd. Least squares4.13. If f(t), R(t), and h(t) denote the failure timedensity function, reliability function, and hazard-rate function of a device, which one of thefollowing expressions is true?R(t)=exp[-Jh(s)ds]a.b. h(t)=-=[hR(t)]h(t)c. f(t)= R(1)d. h(t)= R(s)ds4.14. A new refrigerator has a probability of workingcorrectly when it is first plugged in of 0.985.The probability that it will be delivered to theperson's home with no dents is 0.947. What isthe probability that it will arrive with no damage,and will work the first time?a. 0.932b. 0.933c. 0.985d. 0.9994.15. A process is in control at X-double bar = 100, R--bar = 7.3 with n = 4. If the process level shifts to101.5, with the same R-bar, what is theprobability that the next X-bar point will falloutside the old control limits?4.16.4.17.4.18.Page < 2A certain equipment has a MTBF of m = 300hours. Assuming an exponential distribution oftime to failure, what is the maximum time ofallowable operation if a reliability of 0.999 isrequired?a. 30 hoursb. 0.3 hoursc. 300 hoursd. 0.003 hours>Which principle underlies the effectiveness ofreliability control charting?a. The samples are randomly selectedb. The samples are heterogeneousc. The process shows design immaturityd. For reliability applications, the failure rate iserraticA plastics plant operates 8 extruders producingplastic film. Production volume requirementscannot be met if fewer than 6 extruders areoperating. There is a 0.30 probability that amachine stopping malfunction will occur. Whatis the probability that at least 6 extruders canremain operating throughout the day?a. 0.5783b. 0.4482c. 0.5518d. 0.80594.19. The sample size needed for hypothesis testing:a. Depends upon the proportion rateb. Can be determinedc. Requires a known censor pointd. Indicates that a confidence level andreliability must be provided4.20. In 1000 trials, independent, with the sameprobability of failure at each trial, 50 failures.were observed.Upper and lower 90%(symmetrical 80%) confidence limits on thereliability are:a. 0.96- 0.94b. 0.980.92c. 0.99-0.96d. 1.00 -0.95of

Accepted Answer

The objective is to identify which principle underlies the effectiveness of reliability control…

4.17. Which principle underlies the effectiveness of reliability control charting? a. The samples are randomly selected b. The samples are heterogeneous c. The process shows design immaturity d. For reliability applications, the failure rate is