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A company has 50 employees all working in the same building.

As part of their safety procedures, a fire drill is carried out with the total number
of employees who have left the building recorded every 10 seconds.
The results are displayed in the cumulative frequency diagram below.
The company has the following
policy: "In the event of a fire, at least
90% of the employees must have
left the building within 1 minute."
Cumulative frequency
Did the fire drill procedure meet the
policy above?
You must show all your working.

A company has 50 employees all working in the same building. As part of their safety-example-1

1 Answer

4 votes

Final answer:

To determine if the fire drill procedure met the policy, we need to analyze the cumulative frequency diagram and calculate the percentage of employees who have left the building at different time intervals.

Step-by-step explanation:

To determine if the fire drill procedure met the policy of having at least 90% of employees leave the building within 1 minute, we need to analyze the cumulative frequency diagram. The diagram shows the number of employees who have left the building at different time intervals.

We can calculate the percentage of employees who have left the building by dividing the cumulative frequency by the total number of employees and multiplying by 100.

For example, if at 10 seconds, 25 employees had left the building, the percentage would be (25/50) × 100 = 50%. We can then analyze the cumulative percentage at 1 minute (60 seconds) to determine if it is at least 90%. If the cumulative percentage at 1 minute is 90% or higher, then the fire drill procedure met the policy.

Without the actual values on the diagram, it is not possible to determine if the fire drill procedure met the policy.

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