Sony would like to test the hypothesis that the average age…

Sоny wоuld like tо test the hypothesis thаt the аverаge age of a PlayStation user is the same as the average age of an Xbox user. A random sample of 46 PlayStation users had an average age of 38.2 years while a random sample of 40 Xbox users had an average age of 36.7 years. Assume that the population standard deviation for the age of PlayStation and Xbox users is 3.9 and 4.0 years, respectively. Sony would like to set alpha = 0.10.  In order to find the test statistic you would need to first find the relevant standard error. In this example the standard error of the estimate is ________.