In: Statistics and Probability
| 
 Laramie  | 
 Denver  | 
|
| 
 Sample Mean  | 
 15.3 cats  | 
 21.6 cats  | 
| 
 Sample SD  | 
 4.1 cats  | 
 6.4 cats  | 
| 
 N:  | 
 14  | 
 45  | 

As null hypothesis is rejected at 5% los, we conclude that the claim is true that the cat ladies from Laramie and Denver are statistically significant different.
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