Six Observations Were Selected from Each of Three Populations A Compute the Overall Sample Mean

question 168

Essay

Six observations were selected from each of three populations. The data obtained is shown below.
$\begin{array}{lll}\text { Sample } 1&\text { Sample } 2&\text { Sample } 3\\31 & 31 & 37 \\28 & 32 & 36 \\34 & 33 & 39 \\32 & 30 & 40 \\26 & 32 & 35 \\29 & 34 & 35\end{array}$
a. Compute the overall sample mean .
b. Test at the α = 0.05 level to determine if there is a significant difference in the means of the three populations.

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Definitions:

Posttermination Follow-up

The process of checking in with clients after the formal end of a treatment or service to assess outcomes and ensure continued well-being.

Goal Attainment Scaling

A method for setting personalized goals and measuring progress or achievement relative to those goals.

Fidelity Assessment

A process of evaluating how accurately a program or intervention is being implemented in comparison with the original protocol or model.

Primary Task

The main objective or the central duty that needs to be accomplished in any given project or activity.