Question

Based on the visual inspection of the dot plots, which group appears to have the longer average forearm length? (5 points)

a
Group X, because no child in the group has a forearm length longer than 12 inches.

b
Group X, because four children in the group have the least forearm length of 10 inches.

c
Group Y, because a child in the group has the least forearm length of 10 inches.

dThe two dot plots below compare the forearm lengths of two groups of schoolchildren:

Group Y, because six children have a forearm length longer than 12 inches.

Answer 1

40% (walk) + 27% (cable car) = 67%
67%=0.67
0.67*400 (total students) = 268
Not B,C, or D because:
Walk (40%) plus streetcar (15%) equals
55%, and 0.55*400=220
8% (bicycle)=0.08, 0.08*400=32
Bus (10%)=0.1, 0.1*400=40

Answer 2

Based on the visual inspection of the dot plots, Group Y appears to have the longer average forearm length because six children in the group have a forearm length longer than 12 inches

Answer E Last one

Explanation: