C. The following table shows the price of a text book for quantitive methods in different stores in Zambia: Sorted prices for a text book k126 k128 k129 k136 k159 k166 k167 k169 k169 k170 k172 k113 k120 k123 k145 k146 k147 k152 k153 k153 k166 k139 k142 k143 k161 k163 k165 k180 k183 k199 Assuming the prices are normally distributed; (i) Find the mean of the prices. (ii) Find the standard deviation of the prices. (iii) Find the percentage of values within one standard deviation around the mean. (iv) Find the percentage of values within two standard deviations around the mean (v) Find the percentage of values within three standard deviations around the mean.

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