In: Statistics and Probability
For this problem, we want to compare the delivery speed between Company A and Company B, The question being answered is whether there is a significant difference in the average cycle time to deliver a from Company A vs. Company B.
| 
 Company A  | 
Company B | 
| 20.4 | 20.2 | 
| 24.2 | 16.9 | 
| 15.4 | 18.5 | 
| 21.4 | 17.3 | 
| 20.2 | 20.5 | 
| 18.5 | 19.1 | 
| 21.5 | 18.7 | 
| 20.4 | 17.9 | 
| 19.6 | 19.5 | 
| 21.4 | 18.1 | 
| 22.3 | 17.6 | 
| 22.1 | 19.2 | 
| 21.5 | 18.6 | 
Null Hypothesis?
Alternative Hypothesis?
One tail or Two tails?
Are these independent samples?
Use Excel if you can