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
Answer:C
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