Please explain why in lecture test indicated as one-sided, when Ho : -4? thank you.
As I understood it is two-sided test, as H1 : not equal -4%
1 answers ( 0 marked as helpful)
Hi Yaroslav!
Thanks for reaching out!
In this scenario, the null hypothesis states that the difference in mean performance between management and engineering students is exactly -4%. The alternative hypothesis claims that the difference is not -4%, without specifying the direction of the deviation. Therefore, we would examine both possibilities: whether the actual difference is significantly less than -4% or significantly more than -4%, making it a two-sided test.
Hope this helps.
Best,
Ivan
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