L. 172

2. Student 1 and Student 2 measure the time it takes for two cans to roll down a ramp, conducting

fifty trials for each can. They then count up all their data and make a histogram (shown below, the

horizontal axis is in seconds).

14

12

10

8

6

4

+ 20

mmmmmm

▬▬

2.65 i

2.6

2.55

2.7

2.75

2.8

2.85

2.9

2.95

3 m

3.05

3.1

3.15

3.2

3.25

3.3

ین

3.35

3.4

3.45

3.5

3.55

3.6

Can 1

Can 2

As part of their conclusion in their lab report, they write: "The max to min ranges for the times for

each can are 2.8 to 3.6 seconds and 2.5 to 3.0 seconds. Since the ranges overlap, we must conclude that

there is no significant difference between the two cans." Do you agree with their conclusions? Why

or why not? If not, explain how you would analyze this data differently.