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Hypothesis test for u when σ² is unknown
Let X ~ N (u, σ²)
Ho: u = 150
Ha: u ≠ 150
A random sample of size 36 is taken. The sample mean is 148 and the sample variance is 81. Test Ho[IMG]file:///C:/DOCUME%7E1/CISR/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image002.png[/IMG]