In a study of a particular brand of laptop computer, one group of 9 batteries lasted an average of 17.8 hours before needing recharging, and a second group of 11 batteries lasted an average of 18.1 hours. The difference between the two groups was found to be statistically significant. Are the results practically significant? Why or why not?

Question

Mercury · Answer

Next time please post the appropriate answer choices.

Yes, because the same brand of computer was used for all of the tests.
Yes, because results that are statistically significant are also practically significant.
No, because the 0.3 hour difference in battery life was small.
No, because there were more batteries in the second group.

that being said let's use process of elimination to find the solution

A) this is a true statement but it's not relevant to the question of whether the results are practically significant

D) this is also a true statement but it doesn't prevent results from being practically significant

between B and C which one do you think is a better choice?