An infectious flu virus is spreading through a school. The probability of a randomly selected student having the flu next week is 0.3. Mr C has a class of 20 students. (i)Name a suitable probability...

An infectious flu virus is spreading through a school. The probability of a randomly selected  student having the flu next week is 0.3. Mr C has a class of 20 students.

         (i)Name a suitable probability distribution to model variable
X, stating the parameters.

(ii) Calculate the probability that 2 or more students will have the flu next week.

(iii) If more than 20% of the students have the flu next week, a class test will have to be  cancelled. What is the probability that the test will be cancelled?

(iv) If the school has 350 students, find the expected number that will have the flu next week