Hi,

Can you help me, with this question please?

A hospital conducted a survey to determine whether

patients treated in the emergency room were satised

with the level of care they received. Te hospital

mailed surveys to 550 randomly selected people who

were treated in the emergency room the previous year,

and 415 people responded. Which of the following

factors makes it least likely that a reliable conclusion

can be drawn about care-satisfaction of all emergency

room patients at the hospital?

A) Te survey distribution method

B) Te time elapsed since the care was received

C) Te size of the sample

D) Te number of people who responde