3 In a recent survey, 654 UCT students were found to pay on average R110 per week for airtime data Suppose we know that the population standard deviation for weekly airtime data costs is R34 a) What is the width of a 97 confidence interval estimate of the population mean b) Determine the 95 confid...

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3. In a recent survey, 654 UCT students were found to pay on average R110 per...

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Understanding Business Statistics

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