Answered: The California High School Exit Exam…

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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The California High School Exit Exam scores form a normal distribution with a mean of 750 and a standard deviation of 80. a sample of 36 students was selected at random.

1)What two sample means will form the boundaries that separate the middle 95 percent of sample means from the rest of the distribution?

2) How large a sample is needed to have a standard error that is less than or euqla to 10?

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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