3.12 The total spend of a sample of 110 customers of the Peesharsupermarket and the total spend...
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3.12 The total spend of a sample of 110 customers of the Peesharsupermarket and the total spend of a sample of 128 customers of the Peevar supermarket were analysed and the following grouped frequency distribution produced:
(a) Find approximate values for the mean and standard deviation of each distribution and use them to compare the distributions.
(b) One of these supermarkets attracts customers doing their weekly shopping whereas the other attracts customers seeking occasional alcoholic beverage and luxury food purchases. From your answers to (a), which supermarket is which?
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