9x+12=5x+4
9x-5x=12-4
4x=8
x=8/4
x=2
The standard error of the mean is 12.
The standard error of the mean points to the standard deviation of the distribution of a sample mean obtained from a population.
The standard error S.E of the mean can be calculated by using the formula:
where;
- standard deviation = 24
- sample size n = 4
S.E = 12
Learn more about the Standard error of the mean here:
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How someone supposed to know what the table looks like..... at least add the table
Answer:
x=5
x= -4
Step-by-step explanation: