a) What are the values of SSX, SSy, and SSxy? b) What are the values of B-hat₁ and B-hato? Show two ways to compute B-hat₁. c) Test rxy and B-hat₁ for significance (a ≤.01), confirming that you obtain the same tobt in both analyses.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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2.a) 2400, 1536, 1248 b) .52, 8.2 c) t = 4.102, Reject H0: The correlation and the slope are both significant. d) .258 to .782
2. A sample of 25 subjects were given two tests (labelled X and Y), leading to the following sample statistics:
X-bar = 65
Y-bar = 42
Sx = 10
Sy = 8
In addition, the correlation between X and Y was found to be .65.
a) What are the values of SSx, SSY, and SSXY?
b) What are the values of B-hat₁ and B-hato? Show two ways to compute B-hat₁.
c) Test rxy and B-hat₁ for significance (a ≤.01), confirming that you obtain the same tobt in both analyses.
d) Between what two values would you expect B₁ to fall with 95% confidence?
Transcribed Image Text:2. A sample of 25 subjects were given two tests (labelled X and Y), leading to the following sample statistics: X-bar = 65 Y-bar = 42 Sx = 10 Sy = 8 In addition, the correlation between X and Y was found to be .65. a) What are the values of SSx, SSY, and SSXY? b) What are the values of B-hat₁ and B-hato? Show two ways to compute B-hat₁. c) Test rxy and B-hat₁ for significance (a ≤.01), confirming that you obtain the same tobt in both analyses. d) Between what two values would you expect B₁ to fall with 95% confidence?
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