Answers

2015-03-02T22:15:33+05:30
Q2: n = 4 Mean = 2 Mean =  \frac{Sum}{n} Therefore, Sum = Mean * n = 2 * 4 = 8 Therefore  x_{1} + x_{2} +  x_{3} +  x_{4} = 8 now, n = 5 Mean = 15 Therefore, \frac{x_{1} + x_{2} +  x_{3} +  x_{4} + x_{5}}{n} = Mean Therefore, \frac{8 + x_{5}}{5} = 15 Therefore, 8 +  x_{5} = 15 * 5 Therefore,  x_{5} = 75 - 8 = 67
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