If (−1))p =−1)q , show that p^2 =4q^2 (1− q^2) ? .

Use the normal approximation to the binomial distribution to answer this question. fifteen percent of all students at a large university are absent on mondays. if a random sample of 12 names is called on a monday, what is the probability that four students are absent?

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?