Understanding Basic Statistics 6th Edition by Charles Henry Brase,Corrinne Pellillo Brase

تمرين 67

Critical Thinking Consider a binomial distribution with 10 trials. Look at Table 2 in the Appendix showing binomial probabilities for various values of p. the probability of success on a single trial.
(a) For what value of p is the distribution symmetric What is the expected value of this distribution Is the distribution centered over this value
(b) For small values of p, is the distribution skewed right or left
(c) For large values of p, is the distribution skewed right or left