A sample of 12 measurements has a mean of 8.5 and a sample of 20 measurements has a mean of 7.5. Find the mean of all 32 measure

Question

Helen [10]

3 years ago

11

A sample of 12 measurements has a mean of 8.5 and a sample of 20 measurements has a mean of 7.5. Find the mean of all 32 measure

ments.

Mathematics

1 answer:

nalin [4] · Answer 1 · 2022-03-03T10:31:39+03:00

nalin [4]3 years ago

6 0

Multiply 8.5 by 12, multiply 7.5 by 20, add them together to get 252, then divide that by 32 to get 7.875. 7.875 is the mean of all 32 measurements