Four students did a survey to find the soda flavor sixth-grade students perefer. the table below shows the method each student used to conduct the survey:
student. method
trey- asked 100 students at random from his seventh- grade class what their favorite soda flavor is
jesse- asked 100 sixth-grade students at random what their favorite soda flavor is
nita-asked 100 eighth-grade students at random what their favorite soda flavor is
ruben- asked 100 third- grade students at random what their favorite soda flavor is
which students survey is most likely not biased?
trey
jesse
nita
ruben

The vice president of programming at nbc is finalizing the prime-time schedule for the fall. she has decided to include a hospital drama but is unsure which of two possibilities to select. she has a pilot called the surgeon and another called critical care. to her make a final decision, a sample of 20 viewers from throughout the united states was asked to watch the two pilots and indicate which show they prefer. the results were that 12 liked the surgeon, 7 liked critical care, and one had no preference. state the decision rule, using the 0.10 significance level. h0: π = 0.50 h1: π ≠ 0.50 1. reject h0 if number of + signs is either < = or > = 2. what is your decision regarding h0? is there a preference for one of the two shows?