find the probability of at least one failure in five trials of a binomial experiment in which the probability of success is 30%.

Question

I am stuck in my physics class. Can someone please help me out. I would really appreciate it. Thank you:)

Answer 1

first, calculate theprobability of all 5 trials being successful: 0.3⁵

 

consequently, P(at least one failure)= 1 - P(all successes) = 1 - 0.3⁵