THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A computer information systems manager was in charge of purchasing new battery packs for laptop computers.The choices were narrowed to two available models.Since the two models cost about the same,the manager was interested in determining whether there was a difference in the average time the battery packs would function before needing to be recharged.Based on two independent random samples,the following summary information was computed:

-Based on the 95% confidence interval,can one conclude that there is a difference in the true average functioning time between the two models of battery packs before recharging? Justify your answer.