IME 453: Work Systems - Spring 2022 Midterm #2 7. An analyst studying the time it takes to produce a particular product colected the following data in 93, 80, 101, 83, 93, 88, 90, 85, 80, 105 A performance rating factor of 5 was assessed for all observations. The normal time alowances are seconds s for personal needs, 5% for operation delays, and 3% fatigue zar = 2.262 0.94 is the error of the pilot study acceptable if 5% acceptable error and a 90% confidence level are desired? If not, how many more observations should be collected? We mean of the date is 89.8. the vanance is 71.29 and the formula for standard deviation nalo W.3 - 71.48 - sd- SD- 6.17 nalo 2a/2= 2.262 89.8 x 0.94- 8.4517 9.20.05 PC-01 N: Zan P(1-P) 2.281-XI---1 9 modelo. og b) If you wanted to use the results of the pilot study as the full study, what would be the normal time and the standard time of the process? NT = OTX 81.868 = 69.156 10 Too PS 181.36 incorrect out 85 X ST= NT *(1 + allencome) .69.15 6x (1 + 2 = 72.6138 week? Hint Round your calculations to one decimal point 93 818 Using results of the plot study as the tal study, how many units can be produced in a 40 how Ex 40 = 4.1912 (898 = 3.785 = 3.50 = 4.98 =4.67 3.69 = 4.142 : 3.5 Page 6 -3.91 4.00 IME 453: Work Systems - Spring 2022 Midterm #2 7. An analyst studying the time it takes to produce a particular product colected the following data in 93, 80, 101, 83, 93, 88, 90, 85, 80, 105 A performance rating factor of 5 was assessed for all observations. The normal time alowances are seconds s for personal needs, 5% for operation delays, and 3% fatigue zar = 2.262 0.94 is the error of the pilot study acceptable if 5% acceptable error and a 90% confidence level are desired? If not, how many more observations should be collected? We mean of the date is 89.8. the vanance is 71.29 and the formula for standard deviation nalo W.3 - 71.48 - sd- SD- 6.17 nalo 2a/2= 2.262 89.8 x 0.94- 8.4517 9.20.05 PC-01 N: Zan P(1-P) 2.281-XI---1 9 modelo. og b) If you wanted to use the results of the pilot study as the full study, what would be the normal time and the standard time of the process? NT = OTX 81.868 = 69.156 10 Too PS 181.36 incorrect out 85 X ST= NT *(1 + allencome) .69.15 6x (1 + 2 = 72.6138 week? Hint Round your calculations to one decimal point 93 818 Using results of the plot study as the tal study, how many units can be produced in a 40 how Ex 40 = 4.1912 (898 = 3.785 = 3.50 = 4.98 =4.67 3.69 = 4.142 : 3.5 Page 6 -3.91 4.00