Rebecca and Emma began arguing about who did better on their tests, but they couldn't decide who did bettergiven that they took different tests. Rebecca took a test in English and earned a 71, and Emma took a test inSocial Studies and earned a 70.4. Use the fact that all the students' test grades in the English class had a meanof 71.5 and a standard deviation of 10.7, and all the students' test grades in Social Studies had a mean of 64.1and a standard deviation of 9.5 to answer the following questions.a) Calculate the z-score for Rebecca's test grade.b) Calculate the z-score for Emma's test grade.= Zc) Which person did relatively better?RebeccaO EmmaO They did equally well.

Rebecca earned a test grade of 71 in English. The mean and standard deviation of test grades in…

Answered: Rebecca and Emma began arguing about…

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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DeAndre and Jonah began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. DeAndre took a test in Science and earned a 81.2, and Jonah took a test in Art History and earned a 61.9. Use the fact that all the students' test grades in the Science class had a mean of 72.2 and a standard deviation of 11.8, and all the students' test grades in Art History had a mean of 65.5 and a standard deviation of 10.3 to answer the following questions. a) Calculate the z-score for DeAndre's test grade. Z= b) Calculate the z-score for Jonah's test grade. Z= c) Which person did relatively better? DeAndre Jonah They did equally well. Question Help: Message instructor Submit Question
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On a nationwide math test, the mean was 72 and the standard deviation was 7. If Roberto scored 90, what was his z-score?

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