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A company has many salespersons working in many sales regions The volume of sales generated...

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A company has many salespersons working in many sales regions The volume of sales generated by each person was calculated for the first day in September The standard deviation of the western sales staff was 83 The standard deviation for the eastern sales staff was 64 A sample of 25 eastern staff had a mean of 550 A sample of 30 western was 590 What is the probability of observing these sample means if the population means are the same O 0 0488 O 0 0244 0 1970

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