a standard deviation of 9.8, and all the students' test grades in Social Studies had a mean of 63.4 and a standard deviation of 9.6 to answer the following questions. a) Calculate the z-score for Lauren's test grade. z=z= b) Calculate the z-score for Chelsea's test grade. z=z= c) Which person did relatively better? Lauren Chelsea They did equally well.
a standard deviation of 9.8, and all the students' test grades in Social Studies had a mean of 63.4 and a standard deviation of 9.6 to answer the following questions. a) Calculate the z-score for Lauren's test grade. z=z= b) Calculate the z-score for Chelsea's test grade. z=z= c) Which person did relatively better? Lauren Chelsea They did equally well.
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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Lauren and Chelsea began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Lauren took a test in Math and earned a 75, and Chelsea took a test in Social Studies and earned a 70. Use the fact that all the students' test grades in the Math class had a mean of 76.4 and a standard deviation of 9.8, and all the students' test grades in Social Studies had a mean of 63.4 and a standard deviation of 9.6 to answer the following questions.
a) Calculate the z-score for Lauren's test grade.
z=z=
b) Calculate the z-score for Chelsea's test grade.
z=z=
c) Which person did relatively better?
- Lauren
- Chelsea
- They did equally well.
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