The following are true about confidence intervals: a. they indicate the presence or otherwise of a statistical difference between two populations b. the intervals are larger with smaller sample size c. the intervals give a range of values within which the true value will lie. d. a 95% confidence interval means that 95% of all observed values fall within that interval. e. None of the above.

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 The following are true about confidence intervals:
a. they indicate the presence or otherwise of a statistical difference between two populations
b. the intervals are larger with smaller sample size
c. the intervals give a range of values within which the true value will lie.
d. a 95% confidence interval means that 95% of all observed values fall within that interval.
e. None of the above.

 

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