On the basis of data from 1990 to 2006, the median income y in year x for men and women is approximated by the equations given below, where x 0 corresponds to 1990 and y is in constant 2006 dollars. if these equations remain valid in the future, in what year will the median income of men and women be the same? men -239x+2y=58,389 women -843x+3y=43,711 the median income of men and women will be the same in the year

Atest of sobriety involves measuring the subject's motor skills. a sample of 31 randomly selected sober subjects take the test and produce a mean score of 64.4 with a standard deviation of 2. a claim is made that the true mean score for all sober subjects is equal to 65. for each part below, enter only a numeric value in the answer box. for example, do not type "z =" or "t =" before your answers. round each of your answers to 3 places after the decimal point. (a) calculate the value of the test statistic used in this test. test statistic's value = (b) use your calculator to find the p-value of this test. p-value = (c) use your calculator to find the critical value(s) used to test this claim at the 0.2 significance level. if there are two critical values, then list them both with a comma between them. critical value(s) =