Need answer with steps

Marques Brownlee (MKBHD) is launching a limited run of mobile skins in collaboration with dbrand. The two designs being offered are called Triple Black and Redcode. From previous marked analysis, it was determined that 40% of the customers want the Redcode skin, while the rest want the Triple Black. Once the launch was liver 18 people were immediately in queue to place and order. a) What is the mean value and the standard deviation of the number of people who want to purchase the Redcode skin? b) What is the probability that the number of people who wantthe Redcode Skin is more than two standard deviations away from the mean value? c] dbrand only has 13 Redcode skins and 10 Triple Black skins in stock. If the 18 people waiting in queue place their order one afterthe other, what is the probability that all of them will be able to purchase the skin they want