Answer:
Only option d is not true
Step-by-step explanation:
Given are four statements about standard errors and we have to find which is not true.
A. The standard error measures, roughly, the average difference between the statistic and the population parameter.
-- True because population parameter is mean and the statistic are the items. Hence the differences average would be std error.
B. The standard error is the estimated standard deviation of the sampling distribution for the statistic.
-- True the sample statistic follows a distribution with standard error as std deviation
C. The standard error can never be a negative number. -- True because we consider only positive square root of variance as std error
D. The standard error increases as the sample size(s) increases
-- False. Std error is inversely proportional to square root of n. So when n decreases std error increases
The answer is C. The rest of the answers make no sense and do not work.
Answer:
No, she's wrong
Step-by-step explanation:
So starting from the beginning...
Subtract the 3 from both side and it will look like...
Then add 2x from both sides and it will look like...
Finally divide by 5 to both sides and it will look like...
Answer:
The first step is to divide all the terms by the coefficient of 
which is 2.
The solutions to the quadratic equation 
are:
Step-by-step explanation:
Considering the equation
The first step is to divide all the terms by the coefficient of which is 2.
so
Lets now solve the equation by completeing the remaining steps
Write equation in the form: 
Solving for 
,
Completing the square
Since, you had required to know the first step in completing the square for the equation above, I hope you have got the point, but let me quickly solve the remaining solution.
For 
the solution are 
Solving
∵ Applying imaginary number rule 
Similarly, solving
∵ Applying imaginary number rule
Therefore, the solutions to the quadratic equation are:
