Let the following data be given - let x be independent variable and y be a depending variable and let the estimated simple linear model be : Y = a + bx %3D ly 2 15 3 |19 5 21 7 22 8 23 Find (a) (Xi — Хвar) (у; — Уbar) - - (b) cbar )² (c) 2 (vi – Ybar (d) the slope b (e) the y-intercept a (f) find the correlation r

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 31E
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Let the following data be given - let x be
independent variable and y be a depending
variable
and let the estimated simple linear model be
:
Y = a + bx
|3D
y
15
3
19
21
17
22
23
Find (a)
Σ
E (x;
Хваr) (у — Уваr)
– Ybar)
(b)
2 (x; - Xbar )
(c)
E (yi – Ybar
(d) the slope b (e) the y-intercept a (f) find
the correlation r
00
Transcribed Image Text:Let the following data be given - let x be independent variable and y be a depending variable and let the estimated simple linear model be : Y = a + bx |3D y 15 3 19 21 17 22 23 Find (a) Σ E (x; Хваr) (у — Уваr) – Ybar) (b) 2 (x; - Xbar ) (c) E (yi – Ybar (d) the slope b (e) the y-intercept a (f) find the correlation r 00
A lot of people have difficulty in getting good
sleep of more than 7 hours per day. An
investigator is trying to find if exercise of one
hour or more per day helps, and wants to
test the hypothesis:
Но
µ = 7
versus
На
M > 7
Transcribed Image Text:A lot of people have difficulty in getting good sleep of more than 7 hours per day. An investigator is trying to find if exercise of one hour or more per day helps, and wants to test the hypothesis: Но µ = 7 versus На M > 7
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