Eye of Jade is a pretty popular tatoo parlor here in Chico, with on averge 1 walk-in customers a day. Assume that people randomly decide to get a tatoo that day and walk in to Eye of Jade...

Eye of Jade is a pretty popular tatoo parlor here in Chico, with on averge 1 walk-in customers a day. Assume that people randomly decide to get a tatoo that day and walk in to Eye of Jade independently of other patrons. What is the expected value and variance of of the number of walk-in customers that Eye of Jade can expect to see in a week.