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1) A box of nails that come in different sizes is shown in Table 3.0 Length 10 15 20 25 30 35 40 (mm) Number

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1) A box of nails that come in different sizes is shown in Table 3.0 Length 10 15 20 25 30 35 40 (mm) Number 2 4 4 7 12 3 8 of nails (a) Find the mode. (b) Calculate the mean. (c) Find the number of nails with length longer than it's mean. (d) Find the standard deviation. (15 marks)

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