Answer:
Mean Salary of all employees will be increase by $150.
Explanation:
$150 raise of all 75 employees will be averaged and result in the $150 increase in the mean of all employees salary.
Suppose:
The Sum of all Employees salary = $1,500,000
The Mean of all Employees salary = $100,000 / 75
The Mean of all Employees salary = $20,000
The Sum of all Employees salary after raise = $1,500,000 + ( 75 x 150 )
The Sum of all Employees salary after raise = $1,511,250
The Mean of all Employees salary after raise = $1,511,250 / 75
The Mean of all Employees salary after raise = $20,150
Hence Proved that Mean Salary of all employees will be increase by $150.
