In developing an interval estimate, if the population standard deviation is unknown
A)it is impossible to develop an interval estimate
B)the standard deviation is arrived at using the range
C)the sample standard deviation can be used
D)it is assumed that the population standard deviation is 1

Question

Quizplus · Accepted Answer

When the population standard deviation is unknown, the sample standard deviation can be used to develop an interval estimate using the t-distribution. The range is not used to calculate the standard deviation, and assuming the population standard deviation is 1 is not appropriate.

In Developing an Interval Estimate, If the Population Standard Deviation