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Satistics - Probability - Hypothesis Testing

The Telecommunications industry achieved a more rapid increase in ROI during its initial 75 years in existence than the Oil & Gas industry achieved.
Which business sector, Oil & Gas or Telecommunications, achieved the greater ROI as their relative business sector matured?"

Assuming level of significance α= .05

3. Calculate test statistic.
4. Compute probability of test statistic.
5. Describe the results of your test.

[See the attached question file.]


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