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Salary information regarding male and female employees of a large company is shown below. Male Female Sample Size 64 36 Sample Mean Salary (in $1,000)

Salary information regarding male and female employees of a large company is shown below.

Male

Female

Sample Size

64

36

Sample Mean Salary (in $1,000)

44

41

Population Variance ()

128

72

If you are interested in testing whether or not the average salary of males is significantly greater than that of females, the test statistic is

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