What analysis is needed and what statistical test do we need?

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Question description

A supermarket chain is investigating whether or not it should introduce a new product to its shelves.  Because there are so many products, in order to be profitable, each store must sell an average of 100 unites of the new item per week.  The research department decides to investigate the item's turnover by putting in random sample of 85 stores for one week.  The average sales per store , per week was 109.4 with a standard deviation of 48.2

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(Top Tutor) Daniel C.
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