2 a independent variables amount of light from the

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2) a. Independent Variable(s): Amount of Light from the light bulb Dependent Variable(s): Workers’ productivity b. Is the researcher’s conclusion valid? Explain. If we take into assumption that the work environment at Wing A and B are the same, the conclusion is valid. If there are other factors that could affect the workers’ job at either Wing, it would not be valid. 3) a. Independent Variable(s): Website version A and B Dependent Variable(s): Total Sales b. Is the researcher’s conclusion valid? Explain No, for it to be valid, but Websites version should be tested during the same time to be more precise with the research. It could affect that one version was presented before the other one at different times.
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4) Visibility of system status: The website does complies with heuristic 1. We can see that they have a Newsroom section where they keep the website users informed about what is going on up to date. Error prevention: The website complies with heuristic 5. The layout of the web page is very understandable and all of the topics are divided, this guides the user to go through the topic they want to look at, so yes, it prevents the users of making mistakes.
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