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A sample of 1000 students whose mean weight is 119 lbs (pounds) from a school in Tamil Nadu State was taken and their average weight was found to be 120 lbs with a standard deviation of 30 lbs. Calculate the standard error of the mean.

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Given n = 1000, \(\overline{X}\)= 119, σ = 30

S.E = σ/√n 

= 30/√1000 

= 30/31.623 = 0.9487

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