the stemplot below displays the arm spans, in centimeters, for 44 students. what percentage of students has…

the stemplot below displays the arm spans, in centimeters, for 44 students. what percentage of students has an arm span of at least 170 cm? arm span (cm) 14|3 14|8 15|1 3 4 15|5 6 9 16|0 1 2 2 2 2 3 3 4 4 16|5 5 6 7 9 9 17|0 0 1 3 17|5 6 9 9 18|0 0 1 2 2 3 18|6 6 9 19|0 2 19| 20|2 key: 15|5 = 155 cm

the stemplot below displays the arm spans, in centimeters, for 44 students. what percentage of students has an arm span of at least 170 cm? arm span (cm) 14|3 14|8 15|1 3 4 15|5 6 9 16|0 1 2 2 2 2 3 3 4 4 16|5 5 6 7 9 9 17|0 0 1 3 17|5 6 9 9 18|0 0 1 2 2 3 18|6 6 9 19|0 2 19| 20|2 key: 15|5 = 155 cm

Answer

Explanation:

Step1: Count students with arm - span ≥ 170 cm

Count the number of values in the stemplot with stem 17, 18, 19, 20. There are 4 + 7+ 2+ 1 = 14 students with arm - span 170 - 179 cm, 7 students with arm - span 180 - 189 cm, 2 students with arm - span 190 - 199 cm and 1 student with arm - span 202 cm. So the total number of students with arm - span ≥ 170 cm is 14 + 7+ 2 + 1=24.

Step2: Calculate the percentage

The total number of students is 44. The percentage of students with arm - span ≥ 170 cm is $\frac{24}{44}\times100%=\frac{2400}{44}% \approx 54.55%\approx55%$.

Answer:

55%