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Salary Information Regarding Male and Female Employees of a Large

Question 7

Multiple Choice

Salary information regarding male and female employees of a large company is shown below.  Male  Female  Sample Size 6436 Sample Mean Salary ( in $1000) 4441 Population Variance (σ2) 12872\begin{array} { l r r } & \text { Male } & \text { Female } \\\text { Sample Size } & 64 & 36 \\\text { Sample Mean Salary } ( \text { in } \$ 1000 ) & 44 & 41 \\\text { Population Variance } \left( \sigma ^ { 2 } \right) & 128 & 72\end{array} If you are interested in testing whether or not the population average salary of males is significantly greater than that of females, at α\alpha = .05, the conclusion is that the population


A) average salary of males is significantly greater than females.
B) average salary of males is significantly lower than females.
C) salaries of males and females are equal.
D) average salary of males is greater than females cannot be proved.

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