jem23
Forum Junior
Topics: 15
Posts: 35
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a sample of 100 people is taken at random and their blood pressure is noted..a standard deviation,standard error and 95 percent confidence interval is obtained..if another sample of 25 people is taken at random then what will be the changes in standard error(increase-decrease or no change) and also what will be the change in 95 percent confidance interval(increase-decrease or no change)..
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| drkpp
Forum Guru
Topics: 45
Posts: 882
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std error increase
comf imt becomes bigger
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| sturge_weber
Forum Guru
Topics: 77
Posts: 1,042
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standard error increases as the sample size decreases,
confidence interval i think will decrease, not sure
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| ssrpk
Forum Fanatic
Topics: 154
Posts: 2,814
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agree with drpp, S.E.M inc. as sample size decreases along with wider confidence interval
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| sturge_weber
Forum Guru
Topics: 77
Posts: 1,042
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well please explain the confidence interval
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| sturge_weber
Forum Guru
Topics: 77
Posts: 1,042
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yes sorry , the standard error increases and the confidence interval will also increase...
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