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The sales manager for an automltive parts retail store wanted to estimate the commission that could be expected from the following data 2200,2500,2400,1600,1500,2000,2100,2300 the manager

The sales manager for an automltive parts retail store wanted to estimate the commission that could be expected from the following data

2200,2500,2400,1600,1500,2000,2100,2300

the manager wanted to be 90% confident.

s = ?

criticial value = ?

standard error of the mean.= ?

margsin of error = ?

lcl = ?

ucl = ?

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