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## Identify the claim and state Ho and H Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed, and whether to use a z-test, a t-test, or a chi-square test. Explain your reasoning. Find the critical value(s), identify the rejection region(s), and find the appropriate standardized test statistic. Decide whether to reject or fail to reject the null hypothesis. Interpret the decision in the context of the original claim. A government agency reports that the mean amount of earnings for full-time workers ages 25 to 34 with a master’s degree is less than \$70,000. In a random sample of 15 full-time workers ages 25 to 34 with a master’s degree, the mean amount of earnings is \$66,231 and the standard deviation is \$5945.  At α = 0.05, is there enough evidence to support the agency’s claim?  Assume the population is normally distributed.

1. Identify the claim and state Ho and H
2. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed, and whether to use a z-test, a t-test, or a chi-square test. Explain your reasoning.
3. Find the critical value(s), identify the rejection region(s), and find the appropriate standardized test statistic.
4. Decide whether to reject or fail to reject the null hypothesis.
5. Interpret the decision in the context of the original claim. A government agency reports that the mean amount of earnings for full-time workers ages 25 to 34 with a master’s degree is less than \$70,000. In a random sample of 15 full-time workers ages 25 to 34 with a master’s degree, the mean amount of earnings is \$66,231 and the standard deviation is \$5945.  At α = 0.05, is there enough evidence to support the agency’s claim?  Assume the population is normally distributed.
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