Refer to the Wage data, which reports information on the annual wages for a sample of 100 workers. Also included are variables relating to the industry, years of education, and gender for each worker.
 a. Conduct a test of hypothesis to determine if the mean annual wage is greater than $30,000. Use the .05 significance level. Determine the p-value and interpret the result.
 b. Conduct a test of hypothesis to determine if the mean years of experience is different from 20. Use the .05 significance level. Determine the p-value and interpret the result.
 c. Conduct a test of hypothesis to determine if the mean age is less than 40. Use the .05 significance level. Determine the p-value and interpret the result.
 d. Conduct a test of hypothesis to determine if the proportion of union workers is greater than 15 percent. Use the .05 significance level and report the p-value.
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