A doctor\'s office staff studied the waiting times for patients who arrive at th

Question

A doctor's office staff studied the waiting times for patients who arrive at the office with a request for emergency service. The following data with waiting times in minutes were collected over a one-month period.

Fill in the frequency (to the nearest whole number) and the relative frequency (2 decimals) values below.

Fill in the cumulative frequency (to the nearest whole number) and the cumulative relative frequency (2 decimals) values below.

What proportion of patients needing emergency service wait 9 minutes or less?

2 7 10 18 3 2 5 17 11 7 6 8 14 20 6 7 9 14 19 4

Explanation / Answer

Proportion of patients needing emergency service wait 9 minutes or less = 0.6

Waiting time Frequency Relative frequency 0-4 4 4/20 = 0.2 5-9 8 0.4 10-14 4 0.2 15-19 3 0.15 20-24 1 0.05 Total 20 1

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