Answered: In a sample of 12 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

In a sample of

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

1200

and the standard deviation was

160.5.

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

1016.

Does the t-value for the original sample fall between

−t0.90

and

t0.90?

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

In a sample of 12 randomly selected high school seniors, the mean score on a standardized test was 1200 and the standard deviation was
160.5. Further research suggests that the population mean score on this test for high school seniors is 1016. Does the t-value for the
original sample fall between -to.90 and to.90? Assume that the population of test scores for high school seniors is normally distributed.
The t-value of t =
(Round to two decima
fall between -to.90 and to.90 because to.90
does
does not
=

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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