The null and alternate hypotheses are: h0: µ1 = µ2 h1: µ1 ? µ2 a random sample of 15 items from the first population showed a mean of 50 and a standard deviation of 5. a sample of 12 items for the second population showed a mean of 46 and a standard deviation of 15. assume the sample populations do not have equal standard deviations. (a) find the degrees of freedom for unequal variance test. (round down your answer to the nearest whole number.) degrees of freedom (b) state the decision rule for .05 significance level. (negative amounts should be indicated by a minus sign. round your answers to 3 decimal places.) reject h0 if t is not between and (c) compute the value of the test statistic. (round your answer to 3 decimal places.) value of the test statistic (d) what is your decision regarding the null hypothesis? use the .05 significance level.