Question

Weight	IQ
88	99
112	103
107	97
112	99
80	100
86	90
103	118
121	79
116	80
82	88
65	82
107	103
100	116
91	112
110	92
113	115
105	100
108	94
90	118
73	106
102	126
99	95
80	119
114	116
90	79
95	92
106	78
86	111
106	80

Use the Weight_vs_IQ data. SETUP: Common sense dictates that a person’s IQ and Weight should not be related. However, one never knows until one examines the data. Given the data (IQ and weight for 29 students) your job is to check if the common sense assumption is reasonable or maybe it is not.

13. What test/procedure did you perform?

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

14. What is the P-value/margin of error?

• a. 0.749971
• b. 8.2E-06
• c. 0.711936
• d. 0.355968

15. Statistical interpretation

• a. Since the P-value is very small, we can confirm the common sense assumption that IQ and Weight are not related.
• b. Since the P-value is large, we cannot claim that averages are different.
• c. Since the P-value is large, we cannot claim that IQ and Weight are related.
• d. None of these.

16. Conclusion

• a. I have no statistical evidence to claim that IQ and Weight are related.
• b. I am confident that IQ and Weight are related.
• c. I am confident that IQ and Weight are not related.

Answer 1