The following sample of six measurements was randomly selected from a normally distributed population: 2,5,−2,7,2,4. (a.)Test the null hypothesis that the mean of the population is 2 against the alternative hypothesis, μ < 2. Use α=.05. (b.)Test the null hypothesis that the mean of the population is 2 against the alternative hypothesis, μ isn't equal to 2. Use α=.05. (c.) Find the observed significance level for each test.
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