In order to conduct the study, 12 chain stores were randomly selected and divided into three groups of four stores. Strategy 1 was used in four stores, strategy 2 in four others, and strategy 3 in the remaining four stores. The allocation of strategy to stores was made randomly. The amount of sales (in RM 000’s) during a month at each of the twelve stores were recorded. It is known that the monthly sales in all stores are approximately normally distributed. Explain the steps that should be taken to ensure that the discrepancy in sales is influenced by the advertising strategy only and no other factors such as location, population density, etc. F2, 9, 0.0 5 = 4.2565; F2, 1 1, 0.0 5 = 3.9
In order to conduct the study, 12 chain stores were randomly selected and
divided into three groups of four stores. Strategy 1 was used in four stores,
strategy 2 in four others, and strategy 3 in the remaining four stores. The
allocation of strategy to stores was made randomly. The amount of sales (in
RM 000’s) during a month at each of the twelve stores were recorded. It is
known that the monthly sales in all stores are approximately
distributed
Explain the steps that should be taken to ensure that the discrepancy in
sales is influenced by the advertising strategy only and no other factors
such as location, population density, etc.
F2, 9, 0.0 5 = 4.2565; F2, 1 1, 0.0 5 = 3.9823; F3, 9, 0.0 5 = 3.8625; F3, 1 2, 0.0 5 = 3.49
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