Eugene Gates,Marketing Director of Mansfield Motors Manufacturers,Inc

Multiple Choice

Eugene Gates,Marketing Director of Mansfield Motors Manufacturers,Inc.'s Electrical Division,is leading a study to assess the relative importance of product features.An item on a survey questionnaire distributed to 100 of Mansfield's customers asked them to rate the importance of "ease of maintenance" on a scale of 1 to 10 (with 1 meaning "not important" and 10 meaning "highly important") .His staff assembled the following statistics: If Eugene concludes that the average rate of "ease of maintenance" for all customers is 7.5,he is using ___.

A) a range estimate
B) a statistical parameter
C) a point estimate
D) an interval estimate
E) a guesstimate