Answer:
The standard error is 11.
Step-by-step explanation:
Given : If the standard deviation of a normally distributed population is 22.0 and we take a sample of size 4.
To find : The standard error ?
Solution :
The standard error formula is
Where, 
is the standard deviation of a normally distributed population
n=4 is the sample size
Substitute the value,
Therefore, the standard error is 11.
Answer:
blue is sus
Step-by-step explanation:
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Use Pythagorean theorem
a^2 + b^2 = c^2
C = hypothenuse
8^2 + b^2 = 15^2
64 + b^2 = 225
b^2 = 161
b = square root 161 = 12.68
Solution: 12.7 cm
<span>7/10x-1/5=4 should be written as (7/10)x - 1/5 + 4
or as 7x/10 - 1/5 = 4.
Multiply all 3 terms of the latter equation by 10 to eliminate fractions:
7x - 2 = 40
Then 7x =42, and x = 6.</span>
Corresponding sides of the two triangles occur in a ratio with one another. In particular, you have the relationship
We only need the first two parts to solve for 
:
