If two random samples of sizes 30 and 36 are selected independently from two populations with means 78 and 85,and standard deviations 12 and 15,respectively,then the standard error of the difference and is equal to:
A)0.904
B)3.324
C)3.391
D)0.833

Question

If two random samples of sizes 30 and 36 are selected independently from two populations with means 78 and 85,and standard deviations 12 and 15,respectively,then the standard error of the difference  and  is equal to:
A)0.904 
B)3.324 
C)3.391 
D)0.833

Quizplus · Accepted Answer

The Answer of If two random samples of sizes 30 and 36 are selected independently from two populations with means 78 and 85,and standard deviations 12 and 15,respectively,then the standard error of the difference  and  is equal to:
A)0.904 
B)3.324 
C)3.391 
D)0.833

If Two Random Samples of Sizes 30 and 36 Are