Question: 1. The null hypothesis for the normal approximation for the sign test is that the probability of scores falling above and below the median equals what value? What type of probability distribution is used to make the sign test?
2. A community psychologist selects a sample of 16 local police officers to test whether their physical endurance is better than the median score of 72. She measures their physical endurance on a 1 00-point physical endurance rating scale. Based on the data given below, compute the onesample sign test at a .05 level of significance and state whether to retain or reject the null hypothesis.
