In developing an interval estimate of the population mean, if the population standard deviation is unknown
A)it is impossible to develop an interval estimate
B)a sample proportion can be used
C)the sample standard deviation and t distribution can be used
D)None of the other answers are correct.

Question

Quizplus · Accepted Answer

When the population standard deviation is not known, a sample standard deviation can be used to develop an interval estimate using the t distribution. Choice A is incorrect because it is possible to develop an interval estimate without knowing the population standard deviation. Choice B is incorrect because a sample proportion is not used for estimating population means. Choice D is incorrect because there are other options available for developing an interval estimate in this scenario.

In Developing an Interval Estimate of the Population Mean, If