Project 3_Psych311

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Washington State University *

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Statistics

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Apr 3, 2024

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docx

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4

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Project 3 D. Mauzay Using Chapters 8-11 of the book, provide a clear and concise answer to each question below making sure to address each part of the question. Answer each question in sentence form using correct spelling and grammar. Then, submit the file (appropriately named) with your answers, including any graphs created, through the assignment link in this course space. Be sure that your answers are a different color font (ideally red ) than the questions. Show your work and clearly label where each number is coming from. If you have to use a formula to get an answer, make sure to clearly write down the formula you are using. Credit is given both for right answers as well as based off of work shown/steps taken. 1) Why might the t-test be more useful in actual practice rather than a z-test? 2) What you are seeing below is a screenshot from an SPSS output file (t-test). I created an example data set comparing quiz scores between two different classrooms. For this question I would like for you to watch this excellent tutorial video created by ASK Brunel (2012/13) at the following URL (if you have trouble with this please let me know): https://www.youtube.com/watch?v=quZAwDmcEbE
After watching this video answer the following: What is the significance and the confidence intervals telling you about the two classes with regard to their scores on the quiz?
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