Approximately 10% of all people are left-handed ("11 little-known facts," 2013).
Consider a grouping of 10 people.

a. State the random variable.
b. Argue that this is a binomial experiment

Find the probability that;
a. None are left-handed.
b. Seven are left-handed.
c. At least two are left-handed.
d. At most three are left-handed.
e. At least seven are left-handed.