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

The standard error = 5

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 =
`(S.D)/(√(n) )`

S.E = σ/√n

`S.E = (S.D)/(√(n) ) = (50)/(√(100) ) = 5`

Final answer:-

The standard error ( S.E) = 5