Question

Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).

Answer 1

Answer:

Question 1:

• mean = 13 years

Quesion 2:

• Percent of empolyees that worked for the company for at least 10 years = 73.3%

Explanation:

Start by presenting the row data neatly for better understanding.

Employee      NumberYears Worked

   1                                8

   2                              13

   3                              15

   4                               3

   5                              13

   6                             28

   7                                4

   8                              12

   9                               4

  10                            26

  11                             29

  12                              3

  13                             10

  14                              3

  15                             17

  16                             13

  17                             15

  18                             15

  19                            23

 20                             13

 21                              12

 22                               1

 23                             14

 24                             14

 25                             17

 26                             16

 27                              7

 28                           27

 29                            18

 30                           24

Question 1. Population mean for the number of years worked,

You just must add all the numbers on the column of Number of Years Worked and divide by the number of employes:

• Total of the column Number of Years = 417

• mean = 417 / 30 = 139/10 = 13.1 ≈ 13 years/employee

Question 2. Percent of the employees worked for the company for at least 10 years

You should order the column of Number of Years either by increasing or decreasing order.

The list in increasing order of number of years worked is: 1, 3, 3, 3, 4, 4, 7, 8, 10, 12, 12, 13, 13, 13, 13, 14, 14, 15, 15, 15, 16, 17, 17, 18, 23, 24, 26, 27, 28, 29.

Note that that means that:

• 1 employee worked 1 year,
• 3 employees worked 3 years,
• 2 employees worked 4 years,
• 1 employee worked 7 years,
• 1 employee worked 8 years,
• 1 employee worked 10 years,
• 2 employees worked for 12 years,
• 4 employees worked for 13 years,
• 2 employees worked for 14 years,
• 3 employees worked for 15 years,
• 1 employee worked for 16 years,
• 2 employees worked for 17 years,
• 1 employee worked for 18 years,
• 1 employee worked for 23 years,
• 1 employee worked for 24 years,
• 1 employee worked for 26 years,
• 1 employee worked for 27 years,
• 1 employee worked for 28 years, and
• 1 employee worked for 29 years.

The number of employees that worked for the company for at least 10 years is 1 + 2 + 4 + 2 + 3 + 1 + 2 + 7 = 22.

The percent is:

• % = (number of employees that worked for 10 years or more / number of employees)×100

• % = (22/30)×100 = 73.3%