Final answer:
To find the percentage of men over 20 with upper arm lengths greater than 41.4 cm, divide the number of men with arm lengths greater than 41.4 cm by the total number of men and multiply by 100.
Step-by-step explanation:
To find the percentage of men over 20 with upper arm lengths greater than 41.4 cm, we need to know the total number of men over 20 and the number of men whose upper arm lengths are greater than 41.4 cm. Let's assume there are 100 men over 20, and 25 of them have upper arm lengths greater than 41.4 cm.
To calculate the percentage, we divide the number of men with upper arm lengths greater than 41.4 cm by the total number of men and multiply by 100. In this case, (25 / 100) x 100 = 25%. Therefore, 25% of men over 20 have upper arm lengths greater than 41.4 cm.