9. Salary information regarding two independent random samples of ma large company is shown below. Male Female Sample size 64 36 Sample mean salary (in $1000s) 45 41 Population variance 200 250 The point estimate of the difference between the means of the tw Female) is a. -28 b. 3 d. 4 10. Refer to the table in the previous question. The standard error for the difference St. Er between the two means is a. 4 b. 7.46 2.0 C. 3.17