2. Customer Satisfaction. A large manufacturer that sells consumer products on-l

Question

2. Customer Satisfaction. A large manufacturer that sells consumer products on-line wishes to publicize its customer satisfaction in an advertisement. The manufacturer selects a random sample of 400 customers from its database, contacts them via email and asks them the question “Would you tell a friend to buy a product from us?” 372 say yes and 28 say no. For each of 1 the following questions, select the best answer from choices i. through vi. listed below. i all current customers of the manufacturer ii the customer satisfaction rating for this manufacturer iii the 400 customers selected from the database. iv 93%, the proportion of the 400 customers (or 372 out of 400) who would tell a friend to buy a product from the manufacturer. v all potential customers of the manufacturer. vi the customers in the database of the manufacturer who were not surveyed. (a) What is the population of interest? (b) What is the sample? (c) What is the parameter? (d) What is the statistic?

Explanation / Answer

Population: (i) all current customers of the manufacturer

Sample (iii) the 400 customers selected from the database.

Parameter:(v) all potential customers of the manufacturer.

Statistic:(iv) 93%, the proportion of the 400 customers (or 372 out of 400) who would tell a friend to buy a product from the manufacturer.

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