A facebook-like social web application needs at least 195 newmembers every day in order to sign a profitable contract with acommercial enterprise. This web application tries to attract newmembers sending “friends” suggestions through mail lists. Theprobability of getting one new member per suggestion is 0.3.
1)Find the probability mass function of the number ofsuggestions that has to make in order to get 210 new members perday. 2) find the probability of obtaining 40 new members per day bymaking 150 suggestions per day.