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Question 42 2 pts If the subject of a hypothesis is a single variable, then the null hypothesis is usually stated in terms of what must be true if the alternative hypothesis is false status quo or no differences between groups equality O groups not being equal D Question 43 2 pts A t-test is used to test if the mean of a sample distribution is different than a specified or test mean independent sample o one sample O paired sample O comparison sample Question 44 2 pts In hypothesis testing, the researcher should decide on the significance level for the decision rule after the null and alternative hypotheses are stated O after the hypotheses are stated and the appropriate statistical test is chosen after the hypotheses are stated, but before the statistical test is chosen o after the data are collected