a united nations report shows the mean family income for mexican migrants to the united states is $27,000 per year. a floc (farm labor organizing committee) evaluation of 25 mexican family units reveals a mean to be $30,000 with a sample standard deviation of $10,000. a. state the null hypothesis and the alternate hypothesis. b. state the decision rule for 0.01 significance level. (negative amounts should be indicated by a minus sign. round your answers to 3 decimal places.) c. compute the value of the test statistic. (round your answer to 1 decimal place.) d. does this information disagree with the united nations report? apply the 0.01 significance level.