Answered: 29. The Scholastic Assessment Test…

Name: 29. The Scholastic Assessment Test (SAT) on reading is a standardized
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Description: 29. The Scholastic Assessment Test (SAT) on reading is a standardized test, and the scores are normally distributed to have a mean of 500 and standard deviation of 100. Suppose a random sample of 50 students from a middle-class family background took

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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29. The Scholastic Assessment Test (SAT) on reading is a standardized test, and the scores are normally distributed to have a mean of 500 and standard deviation of 100. Suppose a random sample of 50 students from a middle-class family background took this test and scored 520 in average. To tell whether students from middle-class families in general scored higher than 500, the appropriate statistical hypothesis test should be:

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One-way ANOVA

Independent-samples t test

Related-samples t test

One-sample t test

z test

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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