nypouiesis Search O Reject the null hypothesis The conclusion is: O At the 0.1 alpha level, I was unable to show that the proportion of people who own cats is significantly different than 80 percent. O At the 0.1 alpha level, I was able to show that the proportion of people who own cats is significantly greater than 80 percent. O At the 0.1 alpha level, I was able to show that the proportion of people who own cats is equal to 80 percent. O At the 0.1 alpha level, I was able to show that the proportion of people who own cats is significantly less than 80 percent. O At the 0.1 alpha level, I was unable to show that the proportion of people who own cats is significantly greater than 80 percent. At the 0.1 alpha level, I was unable to show that proportion of people who own cats is significantly less than 80 percent. Question Help: Written Example Message instructor Submit Question

nypouiesis Search O Reject the null hypothesis The conclusion is: O At the 0.1 alpha level, I was unable to show that the proportion of people who own cats is significantly different than 80 percent. O At the 0.1 alpha level, I was able to show that the proportion of people who own cats is significantly greater than 80 percent. O At the 0.1 alpha level, I was able to show that the proportion of people who own cats is equal to 80 percent. O At the 0.1 alpha level, I was able to show that the proportion of people who own cats is significantly less than 80 percent. O At the 0.1 alpha level, I was unable to show that the proportion of people who own cats is significantly greater than 80 percent. At the 0.1 alpha level, I was unable to show that proportion of people who own cats is significantly less than 80 percent. Question Help: Written Example Message instructor Submit Question

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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Impact of College Roommates on Grades In this exercise, we investigate answers to the questions: How much of an effect does your roommate have on your grades? In particular, does it matter whether your roommate brings a videogame to college? A study was conducted involving n = 210 first-year students who were randomly assigned a roommate. Table 1 gives summary statistics on grade point average (GPA) for the first semester depending on whether the student and/or the roommate brought a videogame to campus. Student brought videogame No The 90% confidence interval is i Yes No Yes Roommate brought videogame No No Yes Yes Sample size Mean GPA 88 44 38 40 3.128 ! to i 3.039 2.932 2.754 St. Dev. 0.590 0.689 0.699 Table 1 Videogames and GPA Considering only students who do not bring a videogame to campus, find a 90% confidence interval for the difference in mean GPA between students whose roommate does not bring a videogame and those whose roommate does bring a videogame μN - μy, where μN…
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We are interested in comparing the proportions of men and women who say earning a large salary is very important to them. You surveyed 200 men and 200 women and recorded their answers to the question as “yes” (earning a large salary is very important) or “no” (earning a large salary is not very important). Yes No Total Men 150 50 200 Women 110 90 200 Total 260 140 400 Test the association between sex and the importance of earning a large salary using a z-test. Provide the null and alternative hypotheses, test statistic, p-value, and conclude test with 0.01 signifigance.
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Impact of College Roommates on Grades In this exercise, we investigate answers to the questions: How much of an effect does your roommate have on your grades? In particular, does it matter whether your roommate brings a videogame to college? A study was conducted involving n = 210 first-year students who were randomly assigned a roommate. Table 1 gives summary statistics on grade point average (GPA) for the first semester depending on whether the student and/or the roommate brought a videogame to campus. Student brought videogame No Yes No Yes Roommate brought videogame No No Yes Yes Sample size 88 44 38 40 Mean GPA 3.128 3.039 2.932 2.754 Table 1 Videogames and GPA St. Dev. 0.590 0.689 0.699 0.639 Considering only students whose roommate does not bring a videogame to campus, find a 99% confidence interval for the difference in mean GPA between students who bring a videogame and those who do not bring a videogame μN - My, where μ represents the mean GPA for students who do not bring a…
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