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Find the z score for test scores of 70 _____ and 90 ______.

Find the z score for test scores of 70 _____ and 90 ______.

MATLAB: An Introduction with Applications
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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Find the z score for test scores of 70 _____ and 90 ______.
**Student Scores Analysis** **Recorded Scores:** - 50, 60 - 61, 63 - 66, 67 - 73, 82 - 89, 92 **Five Number Summary:** - Minimum: 50 - Lower Quartile (Q1): 61 - Median: 66.5 - Upper Quartile (Q3): 82 - Maximum: 92 **Statistics:** - Mean: 70.3 - Range: 42 - Mid-Range: 71 - Standard Deviation: 13.5 **Problem-Solving:** 1. **Find the z-score for test scores of 70 and 90.** 2. **Calculate what percent of students earned an "A" grade of 90 or higher.** **Note:** The image also shows a box where scores are recorded, and important statistical figures are noted for further analysis. Use these details for calculations and data interpretation as part of your educational study.
Transcribed Image Text:**Student Scores Analysis** **Recorded Scores:** - 50, 60 - 61, 63 - 66, 67 - 73, 82 - 89, 92 **Five Number Summary:** - Minimum: 50 - Lower Quartile (Q1): 61 - Median: 66.5 - Upper Quartile (Q3): 82 - Maximum: 92 **Statistics:** - Mean: 70.3 - Range: 42 - Mid-Range: 71 - Standard Deviation: 13.5 **Problem-Solving:** 1. **Find the z-score for test scores of 70 and 90.** 2. **Calculate what percent of students earned an "A" grade of 90 or higher.** **Note:** The image also shows a box where scores are recorded, and important statistical figures are noted for further analysis. Use these details for calculations and data interpretation as part of your educational study.
Expert Solution
Step 1

The z-score of a sample data is

Statistics homework question answer, step 1, image 1

Here, mean is 70.3 and standard deviation is 13.5.

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