Practise using chi-squared independence tests to assess relationships between categorical variables with Further Mathematics AS questions and mark schemes.
A town council has published its plans for redeveloping the town centre and residents are being asked whether they approve or disapprove. A random sample of 250 responses has been selected from residents in the four main streets in the town: North, East, South and West Streets. The results are shown in the table.
Test, at the 5% significance level, whether the opinions of the residents are independent of the streets on which they live.