Mathematics (AS & A Level) · Feb / March 2018 · Paper 72 · Question 7
9709
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A nutritionist wishes to investigate the mean sugar content in some cereal bars. He takes a random sample of 10 of the bars and measures the mass, in grams, of sugar in each bar. His results are shown below. 11.9 11.7 11.8 11.9 11.6 12.1 11.7 11.9 11.8 11.9 Assume that the mass, in grams, of sugar in bars of this type has the distribution N-, 0.01 .
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7(i)[4]
7(ii)[1]
7(iii)[1]
7(iv)[1]
7(v)[3]
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