In: Statistics and Probability
Question 1
A small independent book retailer owns a shop and an online web store. The retailer is investigating whether there is a difference in purchase behaviour (the type of book purchased) when customers make a purchase in-store compared to buying online. The retailer looks at all the purchases of business, language and fiction books both online and in-store on a randomly selected day. The results are shown in the table below
Table: Number of books purchased online and in-store categorised by book type
Place of Purchase |
||
Type of Book |
In Store |
Online |
Business |
120 |
155 |
Language |
47 |
25 |
Fiction |
120 |
93 |
Part a)
Use a Chi-square test at a 1% significance level to investigate whether there is an association between the type of book purchased and the place of purchase.
[10 marks]
Part b)
Using the chi-square test result and the survey data shown in the table, briefly summarise the outcome of the survey for the book retailer.
[4 marks]