Question

1.- Consider the following data. – x y x 2 y 2 xy 1 4 1 16 4 1 6 1 36 6 2 6 4 36 12 3 8 9 64 24 P 7 10 49 100 70 14 34 64 252 116 Sxx = 24.8, Syy = 20.8, Sxy = 19.2 (a) Find r (b) Find ˆy (c) Predict y when x is 4 (d) Test the hypothesis ho = 0 vs ho 6= 0,with alpha = 0.10

Name: 1 consider the following data x y x 2 y 2 xy 1 4 1 16 4 1 6 1 36 6 2 6 4 36 12 3 8 9 64 24 p 7 10 49 100 70 14 34 64 252 116 sxx 248 syy 208 sxy 192 a find r b find y c predict y when x is 4 06837
Uploaded: 2023-07-27T12:28:38-08:00
Duration: 3 min 30 s
Channel: Madhur L
Description: 1 consider the following data x y x 2 y 2 xy 1 4 1 16 4 1 6 1 36 6 2 6 4 36 12 3 8 9 64 24 p 7 10 49 100 70 14 34 64 252 116 sxx 248 syy 208 sxy 192 a find r b find y c predict y when x is 4 06837

          1.- Consider the following data.
– x y x
2
y
2 xy
1 4 1 16 4
1 6 1 36 6
2 6 4 36 12
3 8 9 64 24
P
7 10 49 100 70
14 34 64 252 116
Sxx = 24.8, Syy = 20.8, Sxy = 19.2
(a) Find r
(b) Find ˆy
(c) Predict y when x is 4
(d) Test the hypothesis 
ho  = 0 vs 
ho  6= 0,with alpha  = 0.10

Added by Oscar A.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Madhur L

07/27/2023

Step 1

8, Syy = 20.8, and Sxy = 19.2, we can plug them into the formula: r = 19.2 / sqrt(24.8 * 20.8) r = 19.2 / sqrt(515.84) r = 19.2 / 22.71 r ≈ 0.845 So, the correlation coefficient (r) is approximately 0.845. Show more…

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1.- Consider the following data. – x y x 2 y 2 xy 1 4 1 16 4 1 6 1 36 6 2 6 4 36 12 3 8 9 64 24 P 7 10 49 100 70 14 34 64 252 116 Sxx = 24.8, Syy = 20.8, Sxy = 19.2 (a) Find r (b) Find ˆy (c) Predict y when x is 4 (d) Test the hypothesis ho = 0 vs ho 6= 0,with alpha = 0.10