An education researcher has been studying test anxiety using a particular measure, which she administers to students prior to midterm exams. On this measure, she has found that the distribution follows a normal curve. Using the accompanying normal curve table, what percentage of students have Z scores (a) below 0.7, (b) above 0.7, (c) below -0.7, (d) above -0.7, (e) above 1.60, (f) below 1.60, (g) above 1.03, (h) below -0.88, and (i) above 1.69?

Answered: below 0.7, (b) above 0.7, (c) below…

Math

Statistics

below 0.7, (b) above 0.7, (c) below -0.7, (d

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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Question

An education researcher has been studying test anxiety using a particular measure, which she administers to students prior to midterm exams. On this measure, she has found that the distribution follows a normal curve. Using the accompanying normal curve table, what percentage of students have Z scores (a) below 0.7, (b) above 0.7, (c) below -0.7, (d) above -0.7, (e) above 1.60, (f) below 1.60, (g) above 1.03, (h) below -0.88, and (i) above 1.69?

Expert Solution

Step 1

Given that.

X~N( 0 , 1 )

μ=0 , ?=1 (for standard normal distribution)

Z-score =( x - μ )/?

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