Classirying (a) The organizers of a conference want to survey attendees about the registration fee. Which of the following best describes a cluster sample of attendees? th O The organizers form groups of 8 attendees based on the day the attendees registered. Then, the organizers randomly choose 7 groups and select all of the attendees in these groups. O The organizers select the first 56 attendees who register for the conference because these attendees are easily accessible. O The organizers take a list of the attendees and select every 7 attendee until 56 attendees are selected. (b) Counselors at a college want to poll students about how much time the students spend studying. Which of the following best describes a stratified sample of students? O The counselors form groups of 12 students based on the students' majors. Then, the counselors select all of the students in 5 randomly chosen groups. O The students living in a particular dorm building on campus are easily accessible. So, the counselors select the 60 students living in that particular dorm building. O The counselors form 5 groups of students based on the numbers of classes the students are taking. Then, the counselors select 12 students at random from each group. (c) A botanist at a nursery wants to inspect the health of the plants at the nursery. Which of the following best describes a systematic sample of plants? th plant until 54 plants are selected. O The botanist takes a list of the plants and selects every 6 O The botanist forms 6 groups of plants based on the ages of the plants (in months). Then, he selects 9 plants at random from each group. O The botanist assigns each plant a different number. Using a random number table, he draws 54 of those numbers at random. Then, he selects the plants assigned to the drawn numbers. Every set of 54 plants is equally likely to be drawn using the random number table. Activate Go to Setti Explanation Check O 2020 McGraw-Hill Education. All Rights Reserved. Terms of Use | Privacy Acces P Type here to search hp |