Well the total would be -5
9 - 2(7 - 8)
9 - 2(-1)
9 - (-2)
11
That would turn into 3x-5
Add the total of both groups and divide by the total number in each group
Group X = 535 / 18 = 29.72 mean
group Y = 500 / 18 = 27.78 mean
Group X has the higher mean
Answer:
A=BxH 1/2
Step-by-step explanation:
