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Ten individuals are chosen

at random, from a normal population and their weights (in kg) are

found to be 63, 63, 66, 67, 68, 69, 70, 70,
71 and 71. In the light of this data set, test the claim

that the mean
weight in population is 66 kg at 5% level of significance

Comment has been deleted


The answer is 67.8 of mean. how , sum of all no.s/ the count of no.s which is 678 / 10.
1 5 1
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