A general merhandise chain store wants to know if two if its local stores’ sales profiles are similar to that of the general chain. The general daily revenue of the chain is $ 93.5 daily (in thousands) per store. The chain is tracking the sales of each store. The CEO sends two accountants to the stores below to quantify with 95% confidence whether Store A has less sales and store B has more sales in comparison to the general chain’s store profile For the following questions assume that the overall standard deviation is equal to $8 and the chain has data from 100 samples. The chain decides to generalize the inspection scheme and settles for a lenient comparison threshold of 90% confidence. Find a confidence interval of daily revenue for the stores of the entire chain.  For a randomly selected store, on a randomly selected date, what is the probability of having a revenue larger than $ 95 ?  On a randomly selected date, for a randomly selected store, at most how much revenue is expected with a probability of 75%?

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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A general merhandise chain store wants to know if two if its local stores’ sales profiles are similar to that of the general chain. The general daily revenue of the chain is $ 93.5 daily (in thousands) per store. The chain is tracking the sales of each store. The CEO sends two accountants to the stores below to quantify with 95% confidence whether Store A has less sales and store B has more sales in comparison to the general chain’s store profile

For the following questions assume that the overall standard deviation is equal to $8 and the chain has data from 100 samples.

  1. The chain decides to generalize the inspection scheme and settles for a lenient comparison threshold of 90% confidence. Find a confidence interval of daily revenue for the stores of the entire chain.
  2.  For a randomly selected store, on a randomly selected date, what is the probability of having a revenue larger than $ 95 ?
  3.  On a randomly selected date, for a randomly selected store, at most how much revenue is expected with a probability of 75%?

 

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