when Test aspoltestld101870659 ON Christine meurer Qulz Quiz

Test aspoltestld:101870659 ON Christine meurer Qulz: Quiz 19 Chp 13 This Tests 5pts Time Remaininge 00:33154 0 of s When is a t-test performed instead of a z-test Choose the correct answer below OA When the population standard deviation is not know OB When the popalation standard deviation is ksow OC When researchers are pretty certain the nall hypothesis will be rejected OD Whrn the sample standard deviation is know OE Whes the sample standard deviation is not know Oc Whe 26 CH ul 26 CH Nelcome to before you Run the Brw View the haes Nead extra Tuesday. May 26

Solution

The correct answer is A