Question

9. In 2002 the Georgia department of education reported a mean reading test score of 850 from Tattnall County Career Academy with a standard deviation of 50. The sample was taken from 100 11th grade students. Assuming the test scores are normally distributed, what is the standard error

Answer 1

Answer:

The standard error = 5

Step-by-step explanation:

Explanation:-

Given sample size 'n' = 100

Given mean reading test score μ =  850

Given standard deviation of the population 'σ' = 50

The standard error is determined by

 Standard error =   $\frac{S.D}{\sqrt{n} }$

                    S.E = σ/√n

$S.E = \frac{S.D}{\sqrt{n} } = \frac{50}{\sqrt{100} } = 5$

Final answer:-

The standard error ( S.E) = 5