Question

Mr. Thompson runs his own printing and bookbinding business. He suspects that the machine isn't putting enough glue into the book spines and decides to inspect his most recent order of 70 textbooks to test his theory. He numbers them 01-70 and, using the random digit table printed below, selects a simple random sample of 5 books to check. Which books are in the sample? 85063 55810 10470 08029 30025 Choose 1 answer: 06, 35, 58, 10, 10 06, 35, 58, 10,47 85,06, 35,58, 10 50, 63, 55, 10, 04

Answer 1

A simple random sample involves taking a proportion from a population to represent the complete data set.

The books in the sample are: (b) 06 35 58 10 47

How to determine the books in the sample

The numbers are given as:

85063 55810 10470 08029 30025

Rewrite the numbers as 2-digits as follows:

85 06 3 5 58 10 10 47 0 0 80 29 30 02 5

So, we have:

85 06 35 58 10 10 47 00 80 29 30 02 5

Remove numbers outside the range 01 - 70, the single digits and the repeated numbers

06 35 58 10 47 29 30 02

Take the first five samples

06 35 58 10 47

Hence, the books in the sample are: 06 35 58 10 47

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