According to the “ALPHA” company, there employees generally spend more than 55 hours each week working on official duties. The following data show the number of hours worked per week for a sample of 13 IT department and a sample of 11 Accounts department.

IT department:                66 64 64 65 68 59 71 64 64 62 63 66 58

Accounts department:     57 60 56 57 58 59 56 62 61 58 59

What is the third quartile of spending working hours for Accounts department?	[2]
Create a box plot for the number of hours worked for IT department.	[2]
Develop a relative frequency distribution and a percent frequency distribution for the above departments.	[2]
Calculate the z – score for the above data.	[2]