APFIVE Interpreting Significance Test Results
A significance test for a population mean yields t = 1.82 with 24 degrees of freedom and p-value = 0.04 for a left-tailed test. A student claims this provides strong evidence that the population mean is less than the hypothesized value. What flaw exists in this justification?
A
The sample size is too small to draw any conclusion
B
The degrees of freedom should be n-1, not 24
C
The p-value for a left-tailed test with t = 1.82 cannot be 0.04
D
The significance level wasn’t explicitly stated
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