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Old mean=48
each observation is increased by 10%
new mean=528/10=52.8

i think it is correct if not pls comment that it is not right so that i will able to correct it
0 0 0
it is not corrwct because question says that 10%of 48
no no
48 is the mean and the sum is 48*10=480
here 10 is the no. of observations
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