So, if you say "two things aren't equal" because you reject the null hypothesis, then your So, if the level of significance is 0.10, then with a two-tail test, you have 0.05 on the right Saying that two things are not equal means that you have rejected the null hypothesis in a two-tail Grab your aspirin and think about the statements in the context of hypothesis testing. One of the answers is "yes", and the other is "no". If one thing is bigger than another, does that mean they're not equal? If two things are not equal, does that mean one's bigger? Significance (other than 0.01 or 0.05) is desired. Technique, with the t-value must be used if it is not a two-tail test, or if a different level of Using the table to look up the critical values is the most common technique. Value) and your test statistic is negative. Use the last one if you reject the null hypothesis (your test statistic is bigger than the critical Value) and your test statistic is positive. Use the second one if you reject the null hypothesis (your test statistic is bigger than the critical Use the first one if you fail to reject the null hypothesis, that is, your test statistic is not bigger
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