A 99 percent confidence interval allows us to say that if we took many samples from the population:
A)the whole sample would contain a range that included the population parameter.
B)99 percent of all the samples would contain a range that included the population parameter.
C)99 percent of all the samples would allow us to estimate the mean within ±1 percent.
D)1 percent of all the samples would contain a range that included the population parameter.
E)1 percent of all the samples would allow us to estimate the mean within ±1 percent.

Question

Quizplus · Accepted Answer

A 99 percent confidence interval means that if we took many samples from the population, 99 percent of all the samples would contain a range that included the population parameter. This means that there is a high probability that the true population parameter falls within the interval we calculated from the sample. It does not give us information about the percentage of the whole sample or the percentage of samples that would allow us to estimate the mean within ±1 percent.

A 99 Percent Confidence Interval Allows Us to Say That