The document presents a comparison between preferences for Michael Jordan and LeBron James based on grade levels among a sample of 110 students. Statistical analysis shows younger students prefer LeBron James while older students lean towards Michael Jordan, with a significant p-value leading to the rejection of the null hypothesis in favor of Jordan. Sampling methods and potential errors are acknowledged, indicating some limitations in the study.

1. MJ vs. LBJ
By: Joseph Osorio
&
Justin Sloan

2. Is there a preference between Michael Jordan or
Lebron James based on grades level?

3. Random Samples (met)
Independent (met)
Normality (met)
Conditions

4. Proportions
n=110 (sample size)
MJ= 85/110
LJ= 25/110

5. Chi-Square Test
Ho: Pick + Grade are Ha: Not Independent
Independent
Grade Level Michael Lebron James
Jordan
9 14 (18.5) 10 (5.5)
10 18 (20.1) 8 (5.9)
11 22 (19.3) 3 (5.7)
12 31 (27.0) 4 (8)

6. Younger students tend to pick
Lebron James

7. Older students tend to pick
Michael Jordan

8. 1-Proportion Z Test
Since our p-value is low, we reject Ho.

9. Jordan Wins !!!

10. Convenience Sampling
Doesn’t Care
◦ (Doesn’t like basketball)
Potential Errors

11. MJ vs. LBJ
By: Joseph Osorio
&
Justin Sloan