Q. 135.0( 3 Votes )

Find the value of p if the mean of the following distribution is 7.5:


Answer :


Now,



7.5(41+p) = 303 + 9p


307.5 + 7.5p = 303 + 9p


7.5p – 9p = 303 – 307.5


-1.5p = -4.5


p = 3


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