1. For the binomial distribution, write the formula for (a) µ and a, (b) ap- and a^p- when n 0:05N, and (c) a^p- when n > 0:05N.
2. For a random sample of 36 graduate students in economics in a graduate economics program with 880 students, 8 students have an undergraduate degree in mathematics. Find the proportion of all graduate students at this university with an undergraduate major in mathematics at the 90% confidence level.