You wish to test the following claim (Ha) at a significance level of =0.001. Ho:1=2 Ha:1>2 You believe both populations are normally distributed and that the population standard deviations are known. You obtain a sample of size n1=41 with a mean of x1=67.9 and a population standard deviation of 1=15.3 from the first population. You obtain a sample of size n2=44 with a mean of x2=58 and a population standard deviation of 2=11.2from the second population. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value =