Consider the probability that more than 87 out of 155 students will pass their college placement exams. Assume the probability that a given student will pass their college placement exam is 63%.Approximate the probability using the normal distribution. Round your answer to four decimal places.

The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20

Which expression is equivalent to 3^3 + 2^2?

The human resources manager at a company records the length, in hours, of one shift at work, x. he creates the probability distribution below. what is the probability that a worker chosen at random works at least 8 hours? probability distribution px(x) 6 hours 7 hours 8 hours 9 hours 10 hours 0.62 0.78 пол