Question

(a) A botanist at a nursery wants to inspect the health of the plants at the nursery. Which of the following best describes a cluster sample of plants? O The botanist takes a list of the plants and selects every 6th plant until 54 plants are selected. O The botanist forms groups of 9 plants based on the heights of the plants. Then, he randomly chooses 6 groups and selects all of the plants in these groups. O All of the plants that are in one particular room at the nursery are easily accessible. So, the botanist selects the 54 plants in this particular room. (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 6 groups of students based on the numbers of classes the students are taking. Then, the counselors select 13 students at random from each group. O The students living in a particular dorm building on campus are easily accessible. So, the counselors select the 78 students living in that particular dorm building. O The counselors form groups of 13 students based on the students' majors. Then, the counselors select all of the students in 6 randomly chosen groups. (c) The organizers of a conference want to survey attendees about the registration fee. Which of the following best describes a systematic sample of attendees? O The organizers form 6 groups of attendees based on the attendees' employment statuses. Then, the organizers select 12 attendees at random from each group. O The organizers assign each attendee a different number. Using a random number table, the organizers draw 72 of those numbers at random. Then, the organizers select the attendees assigned to the drawn numbers. Every set of 72 attendees is equally likely to be drawn using the random number table. O The organizers take a list of the attendees and select every 3rd attendee until 72 attendees are selected.

(a) A botanist at a nursery wants to inspect the health of the plants at the nursery. Which of the following best describes a cluster sample of plants?

O The botanist takes a list of the plants and selects every 6th plant until 54 plants are selected.
O The botanist forms groups of 9 plants based on the heights of the plants. Then, he randomly chooses 6 groups and selects all of the plants in these groups.
O All of the plants that are in one particular room at the nursery are easily accessible. So, the botanist selects the 54 plants in this particular room.

(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 6 groups of students based on the numbers of classes the students are taking. Then, the counselors select 13 students at random from each group.
O The students living in a particular dorm building on campus are easily accessible. So, the counselors select the 78 students living in that particular dorm building.
O The counselors form groups of 13 students based on the students' majors. Then, the counselors select all of the students in 6 randomly chosen groups.

(c) The organizers of a conference want to survey attendees about the registration fee. Which of the following best describes a systematic sample of attendees?

O The organizers form 6 groups of attendees based on the attendees' employment statuses. Then, the organizers select 12 attendees at random from each group.
O The organizers assign each attendee a different number. Using a random number table, the organizers draw 72 of those numbers at random. Then, the organizers select the attendees assigned to the drawn numbers. Every set of 72 attendees is equally likely to be drawn using the random number table.
O The organizers take a list of the attendees and select every 3rd attendee until 72 attendees are selected.

(a) A botanist at a nursery wants to inspect the health of the plants at the nursery. Which of the following best describes a cluster sample of plants?

O The botanist takes a list of the plants and selects every 6th plant until 54 plants are selected.
O The botanist forms groups of 9 plants based on the heights of the plants. Then, he randomly chooses 6 groups and selects all of the plants in these groups.
O All of the plants that are in one particular room at the nursery are easily accessible. So, the botanist selects the 54 plants in this particular room.

(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 6 groups of students based on the numbers of classes the students are taking. Then, the counselors select 13 students at random from each group.
O The students living in a particular dorm building on campus are easily accessible. So, the counselors select the 78 students living in that particular dorm building.
O The counselors form groups of 13 students based on the students' majors. Then, the counselors select all of the students in 6 randomly chosen groups.

(c) The organizers of a conference want to survey attendees about the registration fee. Which of the following best describes a systematic sample of attendees?

O The organizers form 6 groups of attendees based on the attendees' employment statuses. Then, the organizers select 12 attendees at random from each group.
O The organizers assign each attendee a different number. Using a random number table, the organizers draw 72 of those numbers at random. Then, the organizers select the attendees assigned to the drawn numbers. Every set of 72 attendees is equally likely to be drawn using the random number table.
O The organizers take a list of the attendees and select every 3rd attendee until 72 attendees are selected.

Added by Carl W.

Question

Please give Ace some feedback