A researcher wants to determine if preschool attendance is associated with high schoolgraduation for low-income students. She randomly assigns low-income children to two groups;one group will attend preschool program, the second group will not attend preschool. The researcher plans to followthe children in the study for 20 years and observe whether or not they graduate from high school.Which of the following is the response variable in this study?A. Whether or not a subject graduates high schoolB. O Whether or not a subject attends preschoolC.O The length of time it takes a subject to graduate high schoolD. O The income status of the children

Here we have to identify the correct response variable in this study

Answered: A researcher wants to determine if…

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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In a study researching how donating to charity can affect a person's happiness, 96 participants were given $5 a day for one week. Each participant was randomly assigned to one of two groups. Those assigned to the first group were asked to spend the money on themselves, and those assigned to the second group were asked to donate the money to charity. At the end of the week, all of the participants were asked to rate their overall level of happiness on a scale from 0 to 100, with higher scores indicating greater levels of happiness. Which of the following are the appropriate null and alternative hypotheses to test whether the sample data provide convincing statistical evidence that donating to charity results in greater happiness than spending on oneself, on average? Ho self- "charity = 0 (A) Ha self charity >0 Ho self Mcharity=0 (B) Ha self charity 0 (E) Ha self = Mcharity <0
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