A company is researching the effectiveness of a new web site design to decrease the time to access a website. Five web site users were randomly selected and their times (in seconds) to access the web site with the old and new designs were recorded. The results follow. What is the null hypothesis? A) H₀: µ_d = 0 B) H₀: µ_d $\neq$ 0 C) H₀: µ_d $\le$ 0 D) H₀: µ_d $\ge$ 0

Question

Quizplus · Accepted Answer

The null hypothesis should be that there is no significant difference in the mean time to access the website between the old design and the new design. Therefore, option C is the best choice as it states that the population mean time difference (µ_d) is less than or equal to zero. This states that the mean time of accessing website with old design is either equal or slightly faster than if accessed with new design.

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