Question

Consider the probability that no less than 21 out of 329 students will not pass their college placement exams. Choose the best description of the area under the normal curve that would be used to approximate binomial probability. OPTIONS ARE:

Area to the right of 20.5
Area to the right of 21.5

Area to left of 20.5

Area to left of 21.5

Area between 20.5 and 21.5

Answer 1

P(X > 21) = P(X > 20.5)

Option-A) Area to the right of 20.5