Question
A department store has daily mean sales of $28,372.72. The standard deviation of sales is $2000. On Tuesday, the store sold $34,885.21 worth of goods.
A department store has daily mean sales of $28,372.72. The standard deviation of sales is $2000. On Tuesday, the store sold $34,885.21 worth of goods. Find Tuesday's z-score. Was Tuesday a significantly good day?
I can't remember what formula/process to use on this type of question.
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Reading, Writing, And Proving A Closer Look At Mathematics
Authors: Ulrich Daepp, Pamela Gorkin
2nd Edition
1441994793, 9781441994790
