A computer laboratory manager was in charge of purchasing new battery packs for her lab of laptop computers. She narrowed her choices to two models that were available for her machines. Since the two models cost about the same, she was interested in determining whether there was a difference in the average time the battery packs would function before needing to be recharged. She took two independent random samples and computed the following summary information: Find a 95% confidence interval for the difference in average functioning time before recharging in the two models.
______________
Based on the interval above, can one conclude there is a difference in the true average functioning time before recharging between the two models of battery packs?
______________
Explain.
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Question

A computer laboratory manager was in charge of purchasing new battery packs for her lab of laptop computers. She narrowed her choices to two models that were available for her machines. Since the two models cost about the same, she was interested in determining whether there was a difference in the average time the battery packs would function before needing to be recharged. She took two independent random samples and computed the following summary information:  Find a 95% confidence interval for the difference in average functioning time before recharging in the two models.
______________
Based on the interval above, can one conclude there is a difference in the true average functioning time before recharging between the two models of battery packs?
______________
Explain.
________________________________________________________

Quizplus · Accepted Answer

The Answer of A computer laboratory manager was in charge of purchasing new battery packs for her lab of laptop computers. She narrowed her choices to two models that were available for her machines. Since the two models cost about the same, she was interested in determining whether there was a difference in the average time the battery packs would function before needing to be recharged. She took two independent random samples and computed the following summary information:  Find a 95% confidence interval for the difference in average functioning time before recharging in the two models.
______________
Based on the interval above, can one conclude there is a difference in the true average functioning time before recharging between the two models of battery packs?
______________
Explain.
________________________________________________________

A Computer Laboratory Manager Was in Charge of Purchasing New