해외에서 1학년 때 배운 기초 statstics 문제입니다. R프로그램 이용
Assignment Five; twenty percent of course mark
Specimen answers. Note: some answers have a commentary starting “The A+ student ...”. These parts are not required for full credit, but are included to illustrate statistical thinking
1. In a binomial distribution with n = 10 trials and p = 0.3 of success, what is the probability of observing exactly 3 successes? (give a numerical value and R idiom, or mathematical expression) (15 marks)
answer: any of
[the A+ student checks this:
Which is close to the theoretical value of 266827.9
2. In a physics experiment, a radioactive source is placed for a _xed amount of time, next to a Geiger counter that detects nuclear decay. The counter records how many decay events (\counts") occur during the experiment.