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Mathematics, 29.08.2019 11:30 iamsecond235p318rq

The heights, x cm, of the 10 girls in an athletics team are such that
sum of x (∈x) =1550 and ∈x∧2= 241250
a- find the mean and variance
b- one girl, who is 173cm tall, drops out of the tem. calculate the mean and variance of the heights of the remaining nine members of the team

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The heights, x cm, of the 10 girls in an athletics team are such that
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