Q-Mart is interested in comparing customer who used its own charge card with those who use other types of credit cards. Q-Mart would like to know if customers who use the Q-Mart card spend more money per visit, on average, than customers who use some other type of credit card. They have collected information on a random sample of 38 charge customers as shown below. On average, the person using a Q-Mart card spends $192.81 per visit and customers using another type of card spend $104.47 per visit.

Summary statistics for two samples
	Q-Mart	Other Charges
Sample sizes	13	25
Sample means	192.81	104.47
Sample standard deviations	115.243	71.139
Confidence interval for difference between means
Sample mean difference	88.34
Pooled standard deviation	88.323
Std error of difference	30.201

Using a t - value of 2.0281, the lower limit of a 95% confidence interval for the difference between the average Q-Mart charge and the average charge on another type of credit card is