A Counselors At A College Want To Poll Students About How Much Time The Students Spend Studying Which Of The Followin 1 (39.62 KiB) Viewed 118 times
A Counselors At A College Want To Poll Students About How Much Time The Students Spend Studying Which Of The Followin 2 (16.06 KiB) Viewed 118 times
(a) Counselors at a college want to poll students about how much time the students spend studying. Which of the following best describes a random sample of students? The students living in a particular dorm building on campus are easily accessible. So, the counselors select the 72 students living in that particular dorm building. The counselors form groups of 8 students based on the students' majors. Then, the counselors select all of the students in 9 randomly chosen groups. The counselors use a computer program to draw 72 students at random and select these students. Every set of 72 students is equally likely to be drawn by the computer program (b) The organizers of a conference want to survey attendees about the registration fee. Which of the following best describes a stratified sample of attendees? The organizers form 4 groups of attendees based on the attendees employment statuses. Then, the organizers select 20 attendees at random from each group. The organizers assign each attendee a different number. Using a random number table, the organizers draw 80 of those numbers at random. Then, the organizers select the attendees assigned to the drawn numbers. Every set of 80 attendees is equally likely to be drawn using the random number table The organizers form groups of 20 attendees based on the day the attendees registered. Then, the organizers randomly choose 4 Groups and select all of the attendees in these groups
a (C) A botanist at a nursery wants to inspect the health of the plants at the nursery. Which of the following best describes a convenience sample of plants? The botanist takes a list of the plants and selects every 5th plant unt# 90 plants are selected. All of the plants that are in one particular room at the nursery are easily accessible. So, the botanist selects the 90 plants in this particular room The botanist forms 5 groups of plants based on the ages of the plants (In months). Then, he selects 18 plants at random from each group
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