Question
PLEASE HELP!! I NEED THE ANSWER ASAP
The standard deviation of a population is known to be 7.8. If the sample size is 85, what is the standard error of the mean?
A.0.22
B.0.85
C.1.047
D.6.008
The standard deviation of a population is known to be 7.8. If the sample size is 85, what is the standard error of the mean?
A.0.22
B.0.85
C.1.047
D.6.008
Asked by: USER5138
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245 Answers
Answer (245)
Standard Error of the Mean = SEM = SD/sqrt n
= 7.8/sqrt 85
= 0.846 round it up youll get 0.85
= 7.8/sqrt 85
= 0.846 round it up youll get 0.85
Answer:
0.85
Step-by-step explanation:
We are given that The standard deviation of a population is known to be 7.8.
So, [tex]\sigma = 7.8[/tex]
Population size N = 85
Formula of standard error of the mean = [tex]\frac{\sigma}{\sqrt{N}}[/tex]
Substitute the values in the formula:
So, standard error of the mean = [tex]\frac{7.8}{\sqrt{85}}[/tex]
= [tex]0.8460[/tex]
Thus the standard error of the mean is 0.85
Hence Option B is correct.