Answer:
Step-by-step explanation:
BF is the angle bisector of ∠B.
6 plus 6 equals 12 and that is the answer
Step-by-step explanation:
I hope this is helpful for u
Answer:

Step-by-step explanation:
Given

----- variance
------------ sample
Required
Determine the S.E
The estimated standard error (S.E) for the sample mean is calculated using the following formula:

Where




So:




Hence: the estimated standard error for the sample mean is 2