## Analyzing Test Scores### Problem StatementA standardized test score is normally distributed. Last year, the mean test score ($ \mu $) was 21.3 and the standard deviation ($ \sigma $) was 6. The test scores of four students selected at random are 15, 32, 9, and 35.### TasksFor each student score:1. Calculate the z-score using the formula: \[ z = \frac{(X - \mu)}{\sigma} \] where $ X $ is the student's score.2. Determine if any of the scores are unusual using the following criteria: - A z-score less than -2 or greater than 2 typically indicates an unusual score.### Rounding Instructions- Round all z-scores to two decimal places as needed.### Input Fields- Provide the z-scores for each student: - Score of 15: [___] (round to two decimal places as needed) - Score of 32: [___] (round to two decimal places as needed) - Score of 9: [___] (round to two decimal places as needed) - Score of 35: [___] (round to two decimal places as needed)### Questions- Which (if any) z-scores are unusual? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. - O A. None of the z-scores are unusual. - O B. The score of [___] is unusual.

From the provided information, Mean (µ) = 21.3 Standard deviation (σ) = 5.6 X~N (21.3, 5.6) Here X…

Answered: A standardized exam's scores are…

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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