Use the following statement and contingency table to answer the next four questions:

The contingency table below shows the number of customers who shop at each major coffee chain in Canada, along with their favourite colours. We would like to investigate if coffee preference and favourite colour are independent variables.

Favourite Colour Coffee chain

Tim Hortons Starbucks Second Cup

Red

Yellow

Green

Blue

The degrees of freedom for establishing the critical value of this test are:

What is the expected number of individuals whose favourite colour is green and prefer Tim Hortons coffee?

What is the observed number of individuals whose favourite colour is yellow and prefer Second Cup coffee?

Calculate OEE for the individuals whose favourite colour is green and prefer Tim Hortons coffee.