An education researcher is interested in the effect of violent television programs on a child’s aggression. Forty children were recruited and were divided into two groups. Half of the children watched a violent television program while the other half watched a non-violent program. The children were then placed in a small group and the researcher rated the level of aggressiveness of each child. Which statistical test would be best to determine if there is a significant difference between groups?

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Q: manipulated

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A:

Q: In a random consumer survey, randomly selected drivers of Porsche, Mercedes, and BMW were asked to…

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Q: The director of library services at a college did a survey of types of books (by subject) in the…

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A:

Q: A newly installed automatic gate system was being tested to see if the number of failures in 1,000…

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A: Given: 3 different weight gain diets of mice. i.e. mouse chow, carrots, potato chips.

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A:

Q: The results of a nation wide Gallup poll concerning a person‘s race and their        opinion on the…

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Q: Part 1) A researcher is going to conduct a survey about changes in drug offense sentencing.  Assume…

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A:

Q: Are avid readers more likely to wear glasses than those who read less frequently? 289 men in Ohio…

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A: Z Score CalculationsZ = (M - μ) / √(σ2 / n)Z = (86 - 82) / √(5 / 49)Z = 4 / 0.31944Z = 12.52198

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Q: when you have means from two different samples, it is best to conduct a what test?

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Q: A newly installed automatic gate system was being tested to see if the number of failures in 1,000…

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Q: A newly installed automatic gate system was being tested to see if the number of failures in 1,000…

A: Note: Hey, since multiple subparts are posted, we will answer first three subparts according to our…

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.