Answered: SAT verbal scores are normally…

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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1. SAT verbal scores are normally distributed with a μ = 500. A local high school hasinstituted a new program to engage students in reading. A sample of nine studentsfrom this high school is randomly selected following their participation in this reading program and their SAT verbal scores were reported:

600 760 550 505 660 540 480 535 455

Is the sample mean significantly different from the population mean?

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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