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The following information was obtained from matched samples taken from two populations. The daily production rates for a sample of workers before and after a training program are shown below.Assume the population of differences is normally distributed.
The null hypothesis to be tested is H0: d = 0.The test statistic is
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Perennial plants with an elongated stem, or trunk, supporting branches and leaves in most species.
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Erosion is the process by which natural forces like water, wind, or ice wear away land surfaces, transporting the materials from one location to another.
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substances that pollute something, especially water or the atmosphere, and can cause harm to the environment and health.
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Species that evoke a strong emotional response in humans; charismatic, cute, regal (e.g., lions, tigers, dolphins, pandas).
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