Caution: One sided t-test begins with the investigation of Averages. Only if the Averages are in agreement with the assertion do we use Excel to compute p-value. If Averages are not in agreement, the test is automatically deemed inconsistent and no p-value is computed.

It is commonly believed that men older than 40 are heavier than 170 pounds. UseManBodyData and your statistical expertise to answer the questions: Is this a reasonable belief?

1. What test/procedure did you perform?

• a. One-sided t-test
• b. Two-sided t-test
• c. Regression
• d. Confidence interval

2. Statistical Interpretation

• a. Since P-value is small we are confident that the slope is not zero.
• b. Since P-value is small we are confident that the averages are different.
• c. Since P-value is too large the test is inconclusive.
• d. None of these.

3. Conclusion

• a. Yes, I am confident that the above belief is reasonable.
• b. No, I cannot claim that the above belief is reasonable.