A teacher designed an experiment to see whether students would do better on a quizwhen it was copied onto yellow paper rather than the usual white paper. She gavethe same test to her first and fifth period classes, randomly selecting the class thatwould get the test copied onto yellow paper. The other class got the test copiedonto white paper. After grading the test, she found that 25 of the 40 students whotook the test on yellow paper passed the test as did 30 of the 38 students who tookthe test on white paper.Question 9 (8 points)Display the data in a two-way frequency table.Yellow Paper White Paper TotalPassed Test2530Did not Pass TestTotal4038Blank 1:Blank 2:Blank 3Blank 4:Blank 5:US

Given , 25 of the 40 student who took the test on yellow paper passed the test. Number of students…

Answered: A teacher designed an experiment to see…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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An automobile owner found that 20 years ago, 76% of Americans said they would prefer to purchase an American automobile. He believes that the number is much less than 76% today. He selected a random sample of 56 Americans and found that 38 said that they would prefer an American automobile. Can it be concluded that the percentage today is less than 76% if a=0.01?
Baldur is very interested in statistics and spinning and he decided to combine these two interests and carry out the following research. He randomly selected 100 Reykjavik residents and asked them two questions. On the one hand whether they want chocolate, ice cream or caramel on their pacifier and on the other hand what gender they are. Questions 4-6 deal with Baldur's survey. Baldur's question: "What do you want most on your spinner?" Has three possible answers:1) chocolate, 2) ice cream, 3) caramel, What type is the variable that Baldur records? 1. Continuous category variables. 2. Continuous number variables. 3. Unordered category variables. 4. Sorted category variables. Baldur is interested in investigating whether there is a connection between the two variables, gender and what people want on their spinner. What kind of hypothesis test should Baldur use? 1. Ki-square test. 2. Hypothesis test for two averages. 3. Variance analysis. 4. Simple linear regression. Assume that the…
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A psychologist wanted to know if students in her class were more likely to cheat if they were low achievers. She divided her 60 students into three groups (low, middle, and high) based on their mean exam score on the previous three tests. She then asked them to rate how likely they were to cheat on an exam if the opportunity presented itself with a very limited chance for consequences. The students rated their desire to cheat on a scale ranging from 1-100, with lower numbers indicating less desire to cheat. Before opening the data, what would you hypothesize about this research question?
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