Auto pistons at Wemming Chung's plant in Shanghai are produced in a forging process, and the diameter is a critical factor that must be controlled. From samples sizes of 10 pistons produced each day, the mean and the range of this diameter have been as follows: Day Mean (mm) Range (mm)
1 156.9 4.2
2 153.2 4.6
3 153.6 4.1
4 155.5 5.0
5 156.6 4.5
a. What is the value of ˉˉx?
b. What is the value of ˉR?
c. What are the UCL ¯x and LCL ¯xusing 3σ? Plot the data.
d. What are the UCLR and LCLR using 3σ? Plot the data.
e. If the true diameter's mean should be 155 mm and you want this as your center (nominal) line, what are the new UCL ¯x and LCL ¯x ?

Which of the following is most likely to lead to a general decrease in wages? a. elastic demand b. public goods c. an economic recovery d. immigration 2b2t

The year is 2278, and the starship enterprise is running low on dilithium crystals, which are used to regulate the matter-antimatter reactions that propel the ship across the universe. without the crystals, space-time travel is not possible. if there is only one known source of dilithium crystals, the necessary conditions for a monopoly are met. part 2 (1 point)see hint if the crystals are government owned or government regulated, and the government wants to create the greatest welfare for society, then it should set the price choose one or more: a. so only the rich can afford space-time travel. b. at the profit-maximizing price. c. at the efficient price. d. using the marginal-cost pricing rule. e. so everyone can afford space-time travel. f. at the monopoly price.

Atelephone call center uses three customer service representatives (csrs) during the 8: 30 a.m. to 9: 00 a.m. time period. the standard service rate is 3.0 minutes per telephone call per csr. assuming a target labor utilization rate of 80 percent, how many calls can these three csrs handle during this half-hour period?