Answer: The standard error of the mean = 0.5
Step-by-step explanation:
Given : Sample size : n = 144
Standard deviation : 
The formula to find the standard error of the mean is given by :-

i.e. 
Hence, the standard error of the mean =0.5
She can have 7 days off at most because 3 X 1250 = 3750 - 700 = 3050
Answer: The answer is 0.2
Step-by-step explanation:
1 divided by 5 is 0.2 because 1 goes into 5 0.2 times.
Hope this helps!