Daniel is a front-desk manager at refington hotel, a mid-market hotel. during daniel's shift last week, he received 29 customer complaints. a total of 428 guests had stayed in the hotel that week. given this information, find out the errors per million opportunities.

Bella want to know what the students at her school think of her show. which is the best group to survey to find this information a. go to the mall and ask all of the students she recognizes from school b. ask her viewers to call in durning an episode of the show c. get a list of students at her school from the office and use a random number generator to pick 30 of them d. get a list of students at her school from the office and pick the first 30 students on the list