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Supermarket Price Wars (Woolworths v Coles)
Supermarket giants Woolworths and Coles both claim to offer “low priced groceries”. But, who is cheaper, Woolworths or Coles? The aim of the present study was to investigate whether the prices offered by Coles and Woolworths are significantly different. To achieve this, random sampling of identical items from both supermarkets and hypothesis testing, in the form of paired sample t-test, was carried out.
Modelling the Distribution of Football Goals
What distribution do goals take across a ninety minute football match? The theoretical Poisson distribution used the mean expected number of goals for a match to form a probability distribution. This was compared to the empirical distribution produced by total goals per game from a sample of football matches in the top four English leagues. Further, probabilities of parameters zero, two, three, four and greater than five goals were compared between the empirical and Poisson distributions.