Answered: n a sample of 1313 randomly selected…

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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Related questions

Question

n a sample of

1313

randomly selected high school seniors, the mean score on a standardized test was

11901190

and the standard deviation was

165.6165.6.

Further research suggests that the population mean score on this test for high school seniors is

10211021.

Does the t-value for the original sample fall between

minus−t 0.95t0.95

and

t 0.95t0.95?

Assume that the population of test scores for high school seniors is normally distributed.

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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