The Mapletech Manufacturing Company makes electric wiring, which it sells to contractors in the construction industry. Approximately 900 electrical contractors purchase wire from Mapletech annually. Mapletech’s director of marketing wants to determine electrical contractors’ satisfaction with Mapletech’s wire. She develops a questionnaire that yields a satisfaction score of between 10 and 50 for participant responses. A random sample of 35 of the 900 contractors is asked to complete a satisfaction survey. The satisfaction scores for the 35 participants are averaged to produce a mean satisfaction score.
a. What is the population for this study?
b. What is the sample for this study?
c. What is the statistic for this study?
d. What would be a parameter for this study?