Answered: In a sample of 15 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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Question

In a sample of

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

1191

and the standard deviation was

164.6.

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

1012.

Does the t-value for the original sample fall between

−t0.99

and

t0.99?

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

The t-value of

t=nothing

▼

fall between

−t0.99

and

t0.99

because

t0.99=nothing.

(Round to two decimal places as needed.)

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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