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The Chow City Supermarket chain has just installed Magiceye optical scanning equipment at the checkout counters of its M-ayville store. After one...

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4. The Chow City Supermarket chain has just installed Magiceye optical scanning
equipment at the checkout counters of its M-ayville store. After one month of
experimentation, management notes that the Magiceye system gives a checkout rate
of 6.45 items per minute. This is computed as the number of line items processed
per minute of time that a checkout counter is open, and necessarily involves time
for bagging groceries and processing coupons. The manager of the Mayville store
asked to try System M, an alternate system, and a couple of checkout counters were
equipped with System M. Over the next few days, using difi'erent clerks, System
M was evaluated for 50 separate one-hour periods. These 50 periods showed an average checkout rate of 6.61 items per minute, with a standard deflation of 0.52
item per minute. Assume that the checkout rate is normally distributed. (a) Using the 5% level of significance, test if there is significant difference between
Magiceye and System M. [6 marks] ()3) Using the 5% level of significance, test if System M is significantly faster than
Magiceye. [6 marks]

Top Answer

a) There is No significantly difference between... View the full answer

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