The mean length of 7 childrens' index finger is 9.4cm. The mean length of 5 adults' index finger is 10.2cm. What is the mean len

Question

2 years ago

6

gth (rounded to 2 DP) of these 12 people's index finger?

2 answers:

stira [4] · Answer 1 · 2023-05-19T22:22:18+03:00

stira [4]2 years ago

8 0

Answer:

9.7 cm

Step-by-step explanation:

Deffense [45] · Answer 2 · 2023-05-19T19:53:11+03:00

Deffense [45]2 years ago

3 0

Answer:

9.73 cm to 2 DP

Step-by-step explanation:

Total of the lengths involved = 7*9.4 + 5*10.2

= 116.8 cm

So the mean of the 12 fingers

= 116.8/12

= 9.73 cm to 2 DP.