Statistics

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Which of the following statements correctly interprets a 95% confidence interval on a population mean?
a. It is a single point estimate
b. Used to quantify the certainty of the sample standard deviation
c. A 99% confidence interval is narrower than the 95% confidence interval
d. If we repeatedly took sample from the same population, 95% of them would contain the true population mean.
e. It is not used to interpret the population.

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