Answer with explanation:
We are given a Venn diagram that represents the following information:
Has wheels but does not have brakes=3
Has brakes but does not has wheels=4
Have both wheels and brakes=6 ( the value that lie in the intersection of both)
does not have wheels and brakes both=8 ( since the region outside the circle represents this value).
Hence, the two-way frequency table that is formed via this information is as follows:
Has wheels Does not Total
have wheels
Has brakes 6 4 10
Does not 3 8 11
have brakes
Total 9 12 21