10. The preliminary work sample of an operation indicates the following; what is the required sample size for a three (3) sigma with 4% accuracy. No. of times operator working-60 No. of times operator idle-40 11. PJ Sumeguin, Inc. produces telephone system with built in TV screens. Its learning rate is 80%. a. If the first one took 56hrs, how long will it take the company to complete the 11th unit? b. How long will the 1st 11 systems take in total? c. If you are the purchasing agent, you are expected to buy units 12 through 15 of the new phone systems. What would be your expected cost for the units if company charges $30 for each labor hour?

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10. The preliminary work sample of an operation indicates the following; what is the required sample
size for a three (3) sigma with 4% accuracy.

No. of times operator working-60
No. of times operator idle-40

11. PJ Sumeguin, Inc. produces telephone system with built in TV screens. Its learning rate is 80%.
a. If the first one took 56hrs, how long will it take the company to complete the 11th unit?
b. How long will the 1st 11 systems take in total?
c. If you are the purchasing agent, you are expected to buy units 12 through 15 of the new
phone systems. What would be your expected cost for the units if company charges $30
for each labor hour?

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