If Two Random Samples of Sizes 30 and 35 Are $x _ { 1 } - x _ { 2 }$

True/False

If two random samples of sizes 30 and 35 are selected independently from two populations whose means are 85 and 90,then the mean of the sampling distribution of the sample mean difference, $x _ { 1 } - x _ { 2 }$
,equals 5.