Answer:
B. 20
Step-by-step explanation:
64 ÷ 8 + 6(2)
64 ÷ 8 + 12
8 + 12
20
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
Answer:
Where: 28 is the old value in 36 is the new value in this case we have a positive change increase of 28.571142857