to The standard normal probability tal to the left of z = 1.17 is .8790. The area ability of 13 or fewer errors is given by the sha Exercises Methods 26. A binomial probability distribution has p = .20 and n = 100. SELFtest a. What are the mean and standard deviation? b. Is this situation one in which binomial probabilities can be approximated by the nor- mal probability distribution? Explain. c. What is the probability of exactly 24 successes? d. What is the probability of 18 to 22 successes? e. What is the probability of 15 or fewer successes? repa X Form NP Previous edition Reorder Product