9. Now use Student's t-test (see Table 4-4 in your textbook) at 95% confidence to see if the slope is negative (i.e., that the mass is decreasing), positive (i.e., that the mass is fere increasing), or zero (i.e., that the mass remains the same each year). For this exercise, since the number of coins is significantly greater than 120 (the highest finite number of degrees of freedom in the table) use t = 1.960, the t value for an infinite number of degrees of freedom at the 95% confidence level.
9. Now use Student's t-test (see Table 4-4 in your textbook) at 95% confidence to see if the slope is negative (i.e., that the mass is decreasing), positive (i.e., that the mass is fere increasing), or zero (i.e., that the mass remains the same each year). For this exercise, since the number of coins is significantly greater than 120 (the highest finite number of degrees of freedom in the table) use t = 1.960, the t value for an infinite number of degrees of freedom at the 95% confidence level.
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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How do I use Student's t-Test at a 95% confidence interval to see if a slope is negative positive or zero. n=infinity so t=1.960. The slope is -0.0007 and has an uncertainty of 0.00005 and n=2120 so standard deivation of the slope is 0.0023
Transcribed Image Text:9. Now use Student's t-test (see Table 4-4 in your textbook) at 95% confidence to see if
the slope is negative (i.e., that the mass is decreasing), positive (i.e., that the mass is
fere increasing), or zero (i.e., that the mass remains the same each year). For this exercise,
since the number of coins is significantly greater than 120 (the highest finite number
of degrees of freedom in the table) use t = 1.960, the t value for an infinite number of
degrees of freedom at the 95% confidence level.
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