Independent Random Samples of 100 Observations Each Are Chosen from Two

question 100

Essay

Independent random samples of 100 observations each are chosen from two normal populations with the following means and standard deviations. $$\begin{array}{l}\begin{array} { l l } \text { Population 1 } & \text { Population } 2 \\\mu _ { 1 } = 15 & \mu _ { 2 } = 13 \\\sigma _ { 1 } = 3 & \sigma _ { 2 } = 2\end{array}\\\text { Find the mean and standard deviation of the sampling distribution of } \left( \bar { x } _ { 1 } - \bar { x } _ { 2 } \right) \text {. }\end{array}$$

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Definitions:

Law Of Contingent Reinforcement

The principle that a reward should be given only when a desired behaviour occurs.

As Soon As Possible

A phrase indicating urgency, requesting that a task or action be completed in the shortest amount of time reasonably achievable.

Law Of Contingent Reinforcement

This law states that the effectiveness of a reinforcement depends on how consistently and immediately it follows the desired behavior.

Desired Behaviour

Specific actions or reactions that an organization, system, or individual aims to evoke from others, often through reinforcement or incentives.