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# Please see attached for the following questions. Instructions for Exercises 12.2 ) Make an Excel scatter plot. What does it suggest about the

Please see attached for the following questions.
Instructions for Exercises 12.2 ) 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 . Use these sums to calculate the sample correlation coefficient. Check your work by using Excel's function =CORREL(array1,array2). (c) Use Appendix D to find t.05 for a two-tailed test for zero correlation. (d) Calculate the t test statistic. Can you reject Ï? = 0? (e) Use Excel's function =TDIST(t,deg_freedom,tails)
to calculate the two-tail p-value

12.2 Part-Time Weekly Earnings (\$) by College Students
Hours Worked(X) Weekly Pay (Y)
10 93
15 171
20 204
20 156
35 261

12.3 Data Set Telephone Hold Time(min.) for Concert Tick
Operators (X) Wait Time (Y)
4 385
5 335
6 383
7 344
8 288

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12.2 Part-Time Weekly Earnings (\$) by College Students
Hours Worked(X) Weekly Pay (Y)
10 93
15 171
20 204
20 156
35 261
Y
10
15
20
20
35 Scatter Plot
300
250 X-X-bar
Y-Ybar
93
-10
-84
171
-5
-6...

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