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If the mean of the following data is 26,...

If the mean of the following data is 26, then find the value of p:

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Now, arithametic mean `"mean" barx=(sumf_(i)x_(i))/(sumf_(i))`
`rArr 36=(890+15p)/(30+p)`
`rArr 780+26p=890+15p`
`rArr 11p=110`
`rArr p=10`
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