. The following Table show the number of hours worked by 200 statistics students: Number of Hours Frequency 0 - 9 40 10 - 19 50 20 - 29 70 30 - 39 40   Refer to the Table above. The cumulative frequency for all classes is____

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1. The following Table show the number of hours worked by 200 statistics students:

Number of Hours

Frequency

0 - 9

40

10 - 19

50

20 - 29

70

30 - 39

40

 

Refer to the Table above. The cumulative frequency for all classes is____

 

2. The following Table show the number of hours worked by 200 statistics students:

Number of Hours

Frequency

0 - 9

40

10 - 19

50

20 - 29

70

30 - 39

40

 

Refer to the Table above. The number of students working 19 hours or less______.

 
 
3. An airline company recently supplied the following information on their commuter flights between two major cities.

Arrival

Frequency

Early

100

On time

800

Late

75

Cancelled

25

Total

1000

 

Calculate the probability that a flight will be

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