Find the value of X and TQ

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?

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i