Question

(22) A book store wants to estimate the proportion of its customers who buy murder mysteries. A random sample of 76 customers are observed at the checkout counter and the number purchasing murder mysteries is recorded: (a) What is the implied population? (b) What is the sample? (c) Would this sample necessarily reflect the proportion of customers purchasing non-fiction books? Explain your answer.

Answer 1

a) The no of persons at the checkout counter is the implied population here since the study is done on these people.

b) The 76 customers are the sample of the observation,since 76 are randomly selected to read the behaviour of the customers about reading books.

c) The sample is somehow indicates the proportion of customers reading the non fiction books but not certainty because not all the customers were scrutinized only a random of 76 were selected.