00:01
So, to draw conclusions from the data given, a statistical test should be performed to determine if there are significant differences in the completion times between the four forms.
00:16
It could be, which is analysis of variance, because there's more than two groups.
00:28
And this will help identify if there is a statistically significant difference in the completion times among the four forms.
00:36
But, unfortunately, conclusions cannot be drawn without conducting this statistical test.
00:43
And the data described the completion times for each of the four forms, filled out by 30 different people each.
00:50
So, with this, you would need to do anova.
00:55
Part b, we need the required conditions for conducting anova.
01:05
So, one would be independence.
01:18
The data points are independent of each other, meaning that the completion times of one individual do not affect the completion times of others.
01:31
Two, there needs to be normality, meaning the distribution of completion times within each group should be approximately normal...