Open the Hurricane data. https://www.limes.one/Content/DataFiles/Huricanes.txt Set up: Test if there is a significant difference in death by Hurricanes with category 1 and category 4. Answer the questions for Assessment. HINT: Read Lecture 24.

17. What would be the correct Null-Hypothesis?

• a. Death by Hurricanes with category 1 and category 4 are not related.
• b. The population averages are unequal.
• c. Death by Hurricanes with category 1 and category 4 are related.
• d. The population averages are equal.

18. The P-value is 0.128060089, what can be statistically concluded?

• a. Accept the Null Hypothesis.
• b. We reject the Null Hypothesis.
• c. We cannot reject the Null Hypothesis.
• d. None of the above

19. What would be an appropriate comment?

• a. We are confident that Death by Hurricanes with category 1 and category 4 are related.
• b. We are confident that Death by Hurricanes with category 1 and category 4 are different.
• c. We cannot conclude that Death by Hurricanes with category 1 and category 4 are different.
• d. None of the above.

20. Which of the following is NOT of the Rules of Thumb?

• a. The Null-Hypothesis is always stated with a NOT "equal" sign. Either:
• The (population) averages are NOT equal, or The slope of the regression line is NOT equal zero.
• b. If the P-value is good (typically below 5%), we reject the Null-Hypothesis.
• c. If the P-value is bad (typically above 5%), we cannot reject the Null-Hypothesis.
• d. Mathematically, we cannot state: We accept the Null-Hypothesis.