A Computer Laboratory Manager Was in Charge of Purchasing New

question 97

Short Answer

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 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 samples and computed the following summary information: Is it reasonable to assume equality of variances in this problem? Justify your answer. Perform the appropriate test of hypothesis to determine whether there is a significant difference in average functioning time before recharging between the two models of battery packs. Test using = 0.05.
Test Statistic = ______________
Conclusion: ______________
One ______________ conclude that there is a significant difference in the average functioning time before recharging between the two models of battery packs.

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Definitions:

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