How long did real cowboys live? One answer may be found in the book The Last Cowboys by Connie Brooks (University of New Mexico Press). This delightful book presents a thoughtful sociological study of cowboys in West Texas and Southeastern New Mexico around the year 1890. A sample of 32 cowboys gave the following years of longevity: 58 52 68 86 72 66 97 89 84 91 91 92 66 68 87 86 73 61 70 75 72 73 85 84 90 57 77 76 84 93 58 47

Required:
Make a stem-and-leaf display for these data.

4| 7

5| 2 7 8 8

6| 1 6 6 8 8

7| 0 2 2 3 3 5 6 7

8| 4 4 4 5 6 6 7 9

9| 0 1 1 2 3 7

And with the notation 4|7 represent 47

Step-by-step explanation:

For this case we have the following dataset given:

58 52 68 86 72 66 97 89 84 91 91 92 66 68 87 86 73 61 70 75 72 73 85 84 90 57 77 76 84 93 58 47

And if we order the dataset in increasing way we got:

47 52 57 58 58 61 66 66 68 68 70 72 72 73 73 75 76 77 84 84 84 85 86 86 87 89 90 91 91 92 93 97

And if we create the stem plot we got:

4| 7

5| 2 7 8 8

6| 1 6 6 8 8

7| 0 2 2 3 3 5 6 7

8| 4 4 4 5 6 6 7 9

9| 0 1 1 2 3 7

And with the notation 4|7 represent 47

c is the answer

step-by-step explanation:

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."