The masses, $$\(m\)$$ kilograms, of flour in a random sample of 90 sacks of flour are summarised as follows. $$\( n=90 \quad \Sigma m=4509 \quad \Sigma m^{2}=225950 \)$$ Explain why it was necessary to use the Central Limit theorem in answering part (b). ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................

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