The website, herecomestheguide.com, suggested that couples planning their wedding should expect eighty percent of those who are sent an invitation to respond that they will attend. Rich and Stacy are planning to be married later this year. They plan to send 200 invitations. a. How many guests would you expect to accept the invitation? b. What is the standard deviation? c. What is the probability 150 or more will accept the invitation? d. What is the probability exactly 150 will accept the invitation?