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A sample of n = 16 scores is obtained from a population with µ = 50...

A sample of n = 16 scores is obtained from a population with µ = 50 and σ = 16. If the sample mean is M = 58, then what is the z-score for the sample mean?

A. z=-2.00

B. z=+0.50

C. z=+2.00

D. z=+8.00

math   Statistics-And-Probability   
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Answer #1

solution:

formula

z = (M - ) / / n

= (58-50) / 16 / 16

z = 2

C. z=+2.00

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