A small, independent amusement park collects data on the number of cars with out-of-state license plates. The sample size is fixed at n=100 each day. Data from the previous 10 days indicate the following number of out-of-state license plates:
(a) Calculate the overall proportion of "tourists" (cars with out-of-state plates) and the standard deviation of proportions.
(b) Using ±3σ limits, calculate the LCL and UCL for these data.
(c) Is the process under control? Explain.
Definitions:
Fixed Cost
Costs that do not change with the level of production or output, such as rent, salaries, and loan payments.
Variable Costs
Costs that change in proportion to the level of output or activity in a business.
Snow-clearing
The process of removing snow from surfaces like roads and walkways to ensure safe passage and transportation.
Perfectly Competitive
A market structure characterized by a large number of small firms, identical products, and free entry and exit, leading to price-taking behavior.
Q18: In acceptance sampling, a manager can reach
Q40: The ratio of labor cost per day
Q80: Social accounting can measure what types of
Q96: An assembly drawing lists the operations necessary
Q109: The number of defects after a hotel
Q118: Briefly explain how product life-cycle management (PLM)
Q152: An acceptance sampling plan is to be
Q216: Why do work cells increase the utilization
Q241: Three of the four types of processes
Q257: Briefly explain what the Central Limit Theorem