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?

Being an expert problem solver is something you're either born with or not. true or false

Lillypad toys is a manufacturer of educational toys for children. six months ago, the company's research and development division came up with an idea for a unique touchscreen device that can be used to introduce children to a number of foreign languages. three months ago, the company produced a working prototype, and last month the company successfully launched its new device on the commercial market. what should lillypad's managers prepare for next? a. increased competition from imitators b. a prolonged period of uncontested success c. a sharp decline in demand for the product d. a difficult struggle to move from invention to innovation

Firms like papa john’s, domino’s, and pizza hut sell pizza and other products that are differentiated in nature. while numerous pizza chains exist in most locations, the differentiated nature of these firms’ products permits them to charge prices above marginal cost. given these observations, is the pizza industry most likely a monopoly, perfectly competitive, monopolistically competitive, or an oligopoly industry?