6. a medical director is conducting a survey ...
6. a medical director is conducting a survey to determine if the nurses at the eight hospitals in her medical network feel overworked. explain why the following methods would not produce a random sample.\na. she asks 75 nurses that work the night shift.\nb. she surveys every nurse at one of the eight hospitals in her medical network.
Answer
# Brief Explanations:
a. By only asking night - shift nurses, the sample is limited to a specific work - shift group. Nurses on other shifts may have different workload experiences, so it doesn't represent all nurses in the network randomly.
b. Surveying all nurses from one hospital only focuses on the situation of one hospital out of eight. Each hospital may have different work conditions, so it doesn't randomly represent nurses from all eight hospitals.
# Answer:
a. The sample is not random because it only includes night - shift nurses and excludes nurses on other shifts.
b. The sample is not random because it only includes nurses from one hospital and not from all eight hospitals in the network.