bionomial distribution

  1. R

    Bionomial Probability Distributions

    51% of men consider themselves professional baseball fans. You randomly select 10 men and ask each if he considers himself a professional baseball fan. Find the probability that the number who consider themselves baseball fans is (a) exactly five, (b) at least six, and (c) less than four (a)...
  2. A

    What hypothesis test?

    I have a population of Z items, where X must pass and Y must fail. The thing is that the X that pass is not just a count (i.e. if 2 must pass, it has to be items A and B. It can't be C and D.) How do I figure out the sample size/what test should I use to test this? Also, how would I test it...
  3. S

    Bionomial Distribution

    The average amount spend per month by the parents per child is Rs 1500 with standard deviation Rs. 225 is assumed to follow normal distribution. What is the probability that amount spent on randomly chosen child is between Rs 2500 and 3000.