on av A campus program evenly enrolls undergraduate and grad

A campus program evenly enrolls undergraduate and graduate students. If a random sample of 4 students is selected from the program to be interviewed about the introduction of a new fast food outlet, what is the probability that all 4 students selected are undergraduate students? 0.0256 0.0625 0.16 100 . On the average. 1.8 customers per minute arrive at any one of the checkout counters of a grocery store. What type of probability distribution can be used to find out the probability that there will be no customer arriving at a checkout counter? Binomial distribution Poisson distribution Hyper geometric distribution None of the above

Solution

P(g)=0.5

P(ug)=0.5

P(getting 2 ug students)=0

P( 4 ug students)=0.5^4=0.0625

Poisson distirbution because time is used here.