Answer:
A. 0.020
Step-by-step explanation:
we calculate the standard error of the sample mean with the formula,
,
with E= standard error of the sample mean
s= standard deviation
n= sample
So,
s= 0.2
n= 100

Answer:
Are you making a new post?
Step-by-step explanation:
there are 2 equations are give and there also two unknowns are given
length * width = 245 ft^2
length = 5* width
(5*width) *width = 245
and solving it for width we get
wdith ^2 = 245/5
width = 7ft
putting values into the equation
length = 5*7 = 35