Q13. Email companies claim that 4% of emails per day are spam. Assume a company administrator pts) randomly checks 450 incoming emails from cloud to see which were spam. Assume Binomial Setting. (10 a. What is the EXPECTED VALUE of Spam emails? 18 b. Interpret what the expected value (in part a) means in context. c. What is the STANDARD DEVIATION of spam emails? d. What is the probability that there will be EXACTLY 25 spam emails out of 450 emails? e. What is the probability that there will be AT LEAST 25 spam emails out of 450 emails