Question

A random sample has been taken from a population. A statistician, using this sample, needs to decide whether to construct a 95% confidence interval for the population mean or a 99% confidence interval for the population mean. How will these intervals differ? (4 points) 1) The 95% confidence interval will be wider than the 99% confidence interval. 2) The 95% confidence interval will not be as wide as the 99% confidence interval. 3) The wider interval is dependent on a larger sample size. 4) The wider interval is dependent on whether the sample is unbiased. 5) The wider interval is dependent on whether a z statistic or a t statistic is used.

          A random sample has been taken from a population. A statistician, using this sample, needs to decide whether to construct a 95% confidence interval for the population mean or a 99% confidence interval for the population mean. How will these intervals differ? (4 points)
1) The 95% confidence interval will be wider than the 99% confidence interval.
2) The 95% confidence interval will not be as wide as the 99% confidence interval.
3) The wider interval is dependent on a larger sample size.
4) The wider interval is dependent on whether the sample is unbiased.
5) The wider interval is dependent on whether a z statistic or a t statistic is used.

A random sample has been taken from a population. A statistician, using this sample, needs to decide whether to construct a 95% confidence interval for the population mean or a 99% confidence interval for the population mean. How will these intervals differ? (4 points)
1) The 95% confidence interval will be wider than the 99% confidence interval.
2) The 95% confidence interval will not be as wide as the 99% confidence interval.
3) The wider interval is dependent on a larger sample size.
4) The wider interval is dependent on whether the sample is unbiased.
5) The wider interval is dependent on whether a z statistic or a t statistic is used.

Added by Deborah M.

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