9.4 A clothing retailer operates a ‘no-questions’ returns policy that enables customers to return goods and get their money back as long as they have proof of purchase. A random sample of 500 transactions were tracked in order to find out whether there is a connection between type of garment and the likelihood of returns.

Test for association between garment type and whether or not a garment is returned using a 5 per cent level of significance.

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Ladies' Garment type: Men's Children's Returned Not returned 37 14 19 163 106 161