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a) Identify the claim: state the null and alternative hypotheses. b) Determine the test: left-tailed, right-tailed,...

a) Identify the claim: state the null and alternative hypotheses. b) Determine the test: left-tailed, right-tailed, or two-tailed. c) Graph your bell-shaped curve and label your levels of significance or critical value. d) Find your standardized test statistic ? and label it on your graph. e) Decide whether to reject or fail to reject the null hypothesis. f) Interpret your result.

A study was conducted to determine if the salaries of elementary school teachers from two neighboring states were equal. A sample of 100 teachers from each state was randomly selected. The mean from the first state was $29,000 with a population standard deviation of $2,300. The mean from the second state was $30,000 with a population standard deviation of $2,000. Test the claim that the salaries from both states are equal. Use ? = 0.05.

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