Approximately 10% of people in the world are left-handed, so P(a person is left handed) =…

Approximately 10% of people in the world are left-handed, so P(a
person is left handed) = 0.1. Suppose we have a class of 15 people
and UHD is interested in how many left-handed desks the class will
need, so we define a random variable X, the number of left-handed
people in the class.
1. What distribution family does this situation belong to? What
is (are) the parameter(s)?
2. What is the probability that none of the students will be
left handed, P(X=0)?
3. What is the probability that at most 7 students will be
left-handed, P(X _ 7)?
4. What is the expected number of left-handed students in class,
E(X)?