6.54 Determining hypotheses. State the appropriatenull hypothesis Ho and alternative hypothesis Ha in eachof the following cases.(a) A 2015 study reported that 96% of students owned acell phone. You plan to take an SRS of students to see ifthe percent has increased.(b) The examinations in a large freshman chemistryclass are scaled after grading so that the mean scoreis 75. The professor thinks that students who attendearly-morning recitation sections will have a highermean score than the class as a whole. Her students inthese sections this semester can be considered a samplefrom the population of all students who might attendan early-morning section, so she compares their meanscore with 75.(c) The student newspaper at your college recentlychanged the format of its opinion page. You wantto test whether students find the change an improvement.You take a random sample of students and select thosewho regularly read the newspaper. They are askedto indicate their opinions on the changes using afive-point scale: -2 if the new format is much worsethan the old, -1 if the new format is somewhat worsethan the old, 0 if the new format is the same as theold, +1 if the new format is somewhat better than theold, and +2 if the new format is much better thanthe old.

Solution: We want to determine the null and alternative hypothesis for each situation.

Answered: 6.54 Determining hypotheses. State the…

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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