Question

Apr	Oct
12	0
2	0
4	0
36	0
2	2
7	1
67	0
30	2
4	4
1	0
7	1
4	0
2	0
16	0
15	22
268	1
12	6
73	4
40	0
2	0
30	6
11	0
16	0
10	0
317	5
13	0
1	0
26	1
4	0
58	7
4	1
13	0
30	0
6	0
33	4
5	0
2	0
1	0
4	0
0	4
0	2
21	0
0	4
10	4
12	0

Use the Tornadoes data and your statistical expertise to answer the questions: Is it reasonable to claim that on average October has less tornado-related deaths than April (per year)?

9. What test/procedure did you perform?

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

10. What is the P-Value/margin of error?

• a. 0.723595771
• b. 1.8
• c. 0.007110117
• d. 0.003555059
• e. ​​None of these

11. Statistical Interpretation

• a. Since confidence interval of 3.68411 is below 4 we are confident that the number of tornado-related deaths is below 4.
• b. Since P-value is not small we cannot claim that the number of tornado-related deaths is below 4.
• c. Since confidence interval is above 4 we cannot claim that the number of tornado-related deaths is below 4.
• d. ​​None of these.

12. Conclusion

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

Task 2

Answer 1

First we need to find the descriptive statistics :

Descriptive statistics
	Apr	Oct
count	45	45
mean	27.36	1.80
sample standard deviation	60.63	3.68
sample variance	3,675.64	13.57
minimum	0	0
maximum	317	22
range	317	22

Answers:

9. What test/procedure did you perform?

• a. One-sided t-test

10. What is the P-Value/margin of error?

d. 0.003555059

1. Statistical Interpretation

d. ​​None of these.

12. Conclusion

• a. Yes, I am confident that the above claim is reasonable.