From a population of 200,000,000 elements, the standard deviation is known to be 14. A sample of 49 elements is selected. It is determined that the sample mean is 56. The standa…

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asked Sep 24, 2021 77.1k views

1 Answer

Hassane · Answer 1 · 2021-09-27T21:34:29+0000

Answer:

The standard error of the mean = 2

Explanation:

Given that:

The standard deviation σ = 14

The sample size n = 49

The sample mean
$\overline x$ = 56

The formula for calculating the standard error can be expressed as:

$S.E = (\sigma)/(√(n))$

S.E = (14)/(√(49))

S.E = (14)/(7)

S.E = 2

Therefore, the standard error of the mean = 2