A confidence interval was used to estimate the proportion of statistics students who are female. A random sample of 72 statistics students generated the following 90% confidence interval:
(.438, .642). Based on the interval, is the population proportion of females equal to 58%?
A)No, and we are 90% sure of it.
B)Maybe. 58% is a believable value of the population proportion based on the information above.
C)Yes, and we are 90% sure of it.
D)No, the proportion is 54%.

Question

Quizplus · Accepted Answer

58% (or 0.58) falls within the given confidence interval of 0.438 to 0.642, so it is a plausible value for the population proportion of females in the statistics students population according to this interval.

A Confidence Interval Was Used to Estimate the Proportion of Statistics