SOLUTION: Part-time weekly earnings ($) by college students. hours worked (x) weekly pay (y) 10 93 15

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Question 352117: Part-time weekly earnings ($) by college students.
hours worked (x) weekly pay (y)
10 93
15 171
20 204
20 156
35 261
this is the question: a) make an excel scatter plot. what does it suggest about the population correlation between X and Y? b) make an excel worksheet to calculate SSxx,SSyy, and SSxy c) use appendix D to find t.05 for a two-tailored test for zero correlation. d) calculate the t test statistics. can you reject p=0?

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
a)
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b) From my EXCEL spreadsheet,
xave=20
yave=177
SSXX=350
SSYY=15318
SSXY=2130
b1=SSXY%2FSSXX=6.036
b2=SSXY%2FSSYY=0.139
r%5E2=b1%2Ab2=0.846
a=yave-b1%2Axave=55.286
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highlight%28y=6.036x%2B55.286%29
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Regression line plotted with the data.
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