The difference of sample means of two populations is 108.7, and the standard deviation of the difference in sample means is 32. Which statement is true if we are testing the null hypothesis at the 68% confidence level?

The difference of the two means is significant at the 68% confidence level, so the null hypothesis must be rejected.

The difference of the two means is significant at the 68% confidence level, so the null hypothesis must be accepted.

The difference of the two means is not significant at the 68% confidence level, so the null hypothesis must be rejected.

Question

The difference of sample means of two populations is 108.7, and the standard deviation of the difference in sample means is 32. Which statement is true if we are testing the null hypothesis at the 68% confidence level? 

The difference of the two means is significant at the 68% confidence level, so the null hypothesis must be rejected. 

The difference of the two means is significant at the 68% confidence level, so the null hypothesis must be accepted. 

The difference of the two means is not significant at the 68% confidence level, so the null hypothesis must be rejected.

anonymous · Answer

and the last option says 

The difference of the two means is not significant at the 68% confidence level, so the null hypothesis must be accepted.

anonymous · Answer

@undeadknight26

undeadknight26 · Answer

I would say A...Not 100% sure though

anonymous · Answer

I just guessed D and it was wrong so I'm not sure. I thought it was B