Answer:
The standard error of the sample mean is _17.677_ psi.
Step-by-step explanation:
<u>Explanation</u>:-
A random sample of n = 8 specimens is collected.
Given sample size is n = 8
Given mean of the population 'μ' = 2500 psi
standard deviation 'σ' = 50 psi
Let x⁻ is the mean of the observed sample
Standard error of the sample mean =
...(i)
Given Population of standard error (S.D) 'σ' = 50 psi
Now substitute all values in (i)
![S.E = \frac{50}{\sqrt{8} } =17.677](https://tex.z-dn.net/?f=S.E%20%3D%20%5Cfrac%7B50%7D%7B%5Csqrt%7B8%7D%20%7D%20%3D17.677)
<u>Conclusion</u>:-
The standard error of the sample mean is _17.677psi.
Answer:
16.666
Step-by-step explanation:
divid 200 by 12
<span>–11 – (–15)
Subtract -15 from -11. *Note: If a negative number is being subtracted from another number, it automatically make an addition sign. And so -11-(-15) would be the same as -11 + 15 or the same as 15 - 11.
Final Answer: C. 4
</span>
Answer:A
Step-by-step explanation:
-7x^2-4x+20
-(7x^2+4x-20)
-(7x^2+14x-10x-20)
-(7x(x+2)-10(x+2))
-(7x-10)(x+2)
Answer:
-3
Step-by-step explanation:
The slope of a line is the numerical coefficient in front of the x. The number in front of the x in this case is -3. That's your answer.
Forgot something. The y must be on the other side of the equal sign, and the number in front of it is a 1.