According to the local union president, the median gross income of plumbers in the Arecibo area follows the normal probability distribution with a mean of $ 45,000.00 and a standard deviation of $ 3,000.00. A recent investigative report revealed that the median gross income for a sample of 120 plumbers was $ 45,000.00. Is it reasonable to conclude that the median income is not equal to $ 45,000.00 with a significance level of 0.10? a. State the null and alternate hypothesis B. What is the probability of making a type 1 error? C. State the decision rule D. Determine the value of the test statistic. me. What is the decision regarding the null hypothesis? F. Interpret, in a statement, the result of the statistical test gram. What is the p-value?