In an office, the distribution of work hours is as shown in the following table.Consider the following inferences drawn from the table : I. > The average number of hours worked by a staff member is about 30. II. > The percentage of those who worked 35 or

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Q: 146 (IAS/1999)
In an office, the distribution of work hours is as shown in the following table.Consider the following inferences drawn from the table :
I. The average number of hours worked by a staff member is about 30.
II. The percentage of those who worked 35 or more hours is less than 25.
III. At least 5 staff members worked more than 44 hours.
Which of these inferences is/are valid ?
No. of Staff MembersNo. of hours worked
50 - 19
120 - 24
2525 - 29
4030 - 34
1535 - 39
840 - 45
AnyChart Trial Version

question_subject: 

Maths

question_exam: 

IAS

stats: 

0,0,2,0,1,0,1

keywords: 

{'following inferences': [0, 1, 0, 0], 'inferences': [0, 1, 0, 0], 'work hours': [0, 1, 1, 0], 'distribution': [0, 0, 1, 0], 'percentage': [1, 2, 2, 3], 'more hours': [0, 1, 1, 0], 'following table': [0, 2, 1, 1], 'average number': [0, 0, 0, 1], 'table': [0, 0, 1, 0], 'hours': [7, 2, 16, 9], 'staff members': [0, 1, 0, 0], 'office': [5, 1, 2, 4]}