In: Statistics and Probability
Last month, the TSE Index's monthly rate of return was 1.5%. This is, at the end of last month the value of the TSE Index was 1.5% higher than at the beginning of last month. With 95% confidence, find the last month's rate of return on Acme Oil and Gas stock.
TSERofReturn | AcmeofReturn
| 
 -0.53808  | 
 1.69139  | 
| 
 -1.30760  | 
 0.62487  | 
| 
 1.55857  | 
 1.29760  | 
| 
 -0.61615  | 
 -1.96510  | 
| 
 0.36527  | 
 -1.66576  | 
| 
 -0.72767  | 
 0.72052  | 
| 
 1.24631  | 
 3.02357  | 
| 
 -0.72767  | 
 1.56045  | 
| 
 0.36527  | 
 1.71184  | 
| 
 -1.96559  | 
 -4.36035  | 
| 
 -0.79459  | 
 -1.10648  | 
| 
 -1.02879  | 
 -0.40621  | 
| 
 0.34296  | 
 -1.51823  | 
| 
 -0.77228  | 
 -3.68446  | 
| 
 -0.70537  | 
 1.59162  | 
| 
 0.57716  | 
 0.48001  | 
| 
 -0.38195  | 
 -1.07485  | 
| 
 1.71471  | 
 -1.82605  | 
| 
 1.13478  | 
 1.16997  | 
| 
 0.91173  | 
 -0.62504  | 
| 
 1.51396  | 
 -0.15868  | 
| 
 -2.17748  | 
 -2.69962  | 
| 
 -1.15146  | 
 -2.83833  | 
| 
 -2.57897  | 
 0.51004  | 
| 
 -0.13659  | 
 0.17946  | 
| 
 0.11991  | 
 -1.99079  | 
| 
 3.18683  | 
 3.10854  | 
| 
 1.07902  | 
 0.58272  | 
| 
 0.85597  | 
 -1.53397  | 
| 
 0.40988  | 
 0.64832  | 
| 
 -0.15890  | 
 -0.29848  | 
| 
 -0.34849  | 
 2.42993  | 
| 
 -0.59384  | 
 -0.16470  | 
| 
 1.46935  | 
 3.40678  | 
| 
 1.41359  | 
 1.87236  | 
| 
 -1.53064  | 
 -0.56253  | 
| 
 0.38757  | 
 -0.95550  | 
| 
 -0.68306  | 
 3.42776  | 
| 
 -0.33734  | 
 -2.58515  | 
| 
 0.16452  | 
 -1.74974  | 
| 
 0.08646  | 
 1.08093  | 
| 
 -0.68306  | 
 1.73002  | 
| 
 -2.62358  | 
 -1.92914  | 
| 
 -0.46001  | 
 1.04097  | 
| 
 -0.03622  | 
 0.88267  | 
| 
 0.14222  | 
 -0.40485  | 
| 
 0.08646  | 
 0.75925  | 
| 
 0.09761  | 
 -0.94971  | 
| 
 -0.35964  | 
 -1.00794  | 
| 
 -1.09570  | 
 1.23375  | 
| 
 -0.43771  | 
 -1.12598  | 
| 
 0.20913  | 
 1.18983  | 
| 
 0.86712  | 
 -0.95545  | 
| 
 -1.16262  | 
 -2.48756  | 
| 
 2.45077  | 
 2.50875  | 
| 
 0.14222  | 
 1.02483  | 
| 
 -0.04737  | 
 2.32357  | 
| 
 1.46935  | 
 -0.06018  | 
| 
 2.16080  | 
 0.24494  | 
Minitab output:
Regression Analysis: AcmeofReturn versus TSERofReturn
The regression equation is
AcmeofReturn = 0.020 + 0.598 TSERofReturn
Predictor Coef SE Coef T P
Constant 0.0195 0.2156 0.09 0.928
TSERofReturn 0.5980 0.1862 3.21 0.002
S = 1.65612 R-Sq = 15.3% R-Sq(adj) = 13.8%
Analysis of Variance
Source DF SS MS F P
Regression 1 28.300 28.300 10.32 0.002
Residual Error 57 156.336 2.743
Total 58 184.636
Predicted Values for New Observations
New Obs Fit SE Fit 95% CI 95% PI
1 0.916 0.352 (0.212, 1.621) (-2.474, 4.307)
Values of Predictors for New Observations
New Obs TSERofReturn
1 1.50
95% confidence Interval for the last month's rate of return on Acme Oil and Gas stock when Last month, the TSE Index's monthly rate of return was 1.5%: (0.212, 1.621).