MomCorp is selling its new eyePhone on the market. One of the less popular stores, however, only expects to sell 4 every 15 minutes. a. What is the probability that this store sells exactly one...

MomCorp is selling its new eyePhone on the market. One of the less popular stores, however, only expects to sell 4 every 15 minutes.

a. What is the probability that this store sells exactly one eyePhone in the first 15 minutes of opening?

b.what is the probability that this store sells at least 2 eyePhones in the first 15 minutes of opening?