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Mean of 7,9,2p+3,3--2and 11 is 10 find p and Median ​

Answer» ONG>ANSWER:

mean =  \frac{sum \: of \: observations}{number \: of \: observations}  \\10  =  \frac{(7 + 9 + 2p + 3 + 3 + 2 + 11)}{6}  \\ 10 =  \frac{(2p + 35)}{6}  \\ 10 \times 6 = 2p + 35 \\ 60 = 2p + 35 \\ 60 - 35 = 2p \\ 25  = 2p \\ 25 \div 2 = p \\ p = 12 .5



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