Given the following process control data for a normally distributed quality variable (four samples of size five each): Sample Measurements
8am 11.6 11.9 12.0 12.2 11.8
9am 12.1 11.8 11.9 12.0 11.8
10am 11.8 12.9 12.1 12.8 11.9
11am 12.0 12.2 12.1 12.2 13.0

If the process is known to have a mean of 12.0 and an average range of 0.5 (5 observations per sample), using three-sigma control limits, do any of the sample means indicate an out-of-control process, and if so, which specifically?

Which analyst position analyzes information using mathematical models to business managers make decisions? -budget analyst -management analyst -credit analyst -operations research analyst

Explain whether each of the following events increases or decreases the money supply. a. the fed buys bonds in open-market operations. b. the fed reduces the reserve requirement. c. the fed increases the interest rate it pays on reserves. d. citibank repays a loan it had previously taken from the fed. e. after a rash of pickpocketing, people decide to hold less currency. f. fearful of bank runs, bankers decide to hold more excess reserves. g. the fomc increases its target for the federal funds rate.

Zeta corporation is a manufacturer of sports caps, which require soft fabric. the standards for each cap allow 2.00 yards of soft fabric, at a cost of $2.00 per yard. during the month of january, the company purchased 25,000 yards of soft fabric at $2.10 per yard, to produce 12,000 caps. what is zeta corporation's materials price variance for the month of january?