The probability of the treatment group’s mean being greater than the control group’s mean by 8 points or more is 0.036.
<h3>How to calculate the probability?</h3>
The probability of the treatment group’s mean being greater than the control group’s mean by 8 points or more will be:
= (26 + 8 + 2)/1000
= 36/1000
= 0.036
The significance level is set at 5%, and the probability of the result is statistically significant because the probability of the difference is less than 5% significance level.
Area means the length times the width. This means they will equal anything that is multiplyed to get 12. It could be 6 and 2 because they equal 12. It could also be 4 times 3 which is 12. The last could be 12 and 1. These are all the possibilities for the length and width. The order doesn't matter though so it could also be flipped (2·6 instead of 6·2) Hope this helps!