Null hypothesis
... Types One sample compare with population Unpaired compare with control Paired same subjects: pre-post Z-test large samples >60 ...
... Types One sample compare with population Unpaired compare with control Paired same subjects: pre-post Z-test large samples >60 ...
EDF 6472
... Step 3, we know that, for this sample z = -1.75. This is less than -1.65, so we conclude that the chances of the null hypothesis being true is less than 5% and decide to reject the null hypothesis. We will decide that the population mean is less than 175. e. Is there an inconsistency between the res ...
... Step 3, we know that, for this sample z = -1.75. This is less than -1.65, so we conclude that the chances of the null hypothesis being true is less than 5% and decide to reject the null hypothesis. We will decide that the population mean is less than 175. e. Is there an inconsistency between the res ...
Chapter 7
... Example: Finding Critical Values for t Find the critical values t0 and -t0 for a two-tailed test given = 0.05 and n = 26. Solution: • The degrees of freedom are d.f. = n – 1 = 26 – 1 = 25. • Look at α = 0.05 in the “Two Tail, ” column. • Because the test is twotailed, one critical value is negat ...
... Example: Finding Critical Values for t Find the critical values t0 and -t0 for a two-tailed test given = 0.05 and n = 26. Solution: • The degrees of freedom are d.f. = n – 1 = 26 – 1 = 25. • Look at α = 0.05 in the “Two Tail, ” column. • Because the test is twotailed, one critical value is negat ...
