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The following sample was obtained from a population with unknown parameters. Scores: 5, 1, 2, 6,...

The following sample was obtained from a population with unknown parameters.
Scores: 5, 1, 2, 6, 2, 2, 4
a. Compute the sample mean and standard deviation (show all steps and formulas).
b. Compute the estimated standard error of M. (show all steps and formulas).
Be sure to show all formulas with symbols (and plug in numbers), steps, processes and calculations for all parts of all answers above.

math   Statistics-And-Probability   
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Answer #1

a)

b) error=s/√n

1.864//√7

=0.704525778

=0.7045

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