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# Satistics - Probability - Hypothesis Testing

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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 &#945;= .05

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

[See the attached question file.]

https://brainmass.com/statistics/hypothesis-testing/statistics-probability-hypothesis-testing-192664

#### Solution Preview

The solution file is attached.

(1) H0: The Telecommunications industry achieved about the same or lesser ROI than the Oil & Gas sector,
that is 2  1
Ha: The Telecommunications industry achieved a greater ROI than the Oil & Gas sector, that is, 2 > 1
(2) Upper-tailed t- test for the difference in means of independent samples with  = 0.05
Dof ...

#### Solution Summary

The expert examines hypothesis testing in probability statistics. Neat, step-by-step solution is provided.

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