Brady manages a small airline, and their goal is for 90% of passengers to say they are satisfied after a flight. Suppose he took a random sample of 10 passengers from a flight of 50 passengers to test the hypotheses H_o : p = 0.90 versus H_a : p < 0.90, where p is the proportion of passengers on that flight who were satisfied.
Which conditions for performing this type of test did Brady's sample meet?
Choose all answers that apply:
1. The data is a random sample from the population of interest
2. np ≥ 10 and n(1- p) ≥ 10
3. Individual observations can be considered independent