Sagot :
The sample mean for the number of years worked is 14, and 73% of the employees in the sample worked for the company for at least 10 years.
What are mean?
The mean is the average value which can be calculated by dividing the sum of observations by the number of observations
Mean = Sum of observations/the number of observations
The mean = (sum of service years) / employees in the sample worked
[tex](8+13+15+3+13+28+4+12+4+26+29+3+10+3+17+13+15+15+23+13+12+1+14+14+17+16+7+27+18+24) /30\\= (417 / 30)[/tex]
= 13.9 years
= 14 years
The percentage of employees who have worked for at least 10 years :
The number of employees with service years ≥ 10 years
= 22 employees
Total number of employees
Percentage (%) = (22 / 30)
= * 100%
= 0.7333 x 100%
= 73.33% = 73%
Therefore, The sample mean for the number of years worked is 14, and 73% of the employees in the sample worked for the company for at least 10 years.
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