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Author Question: The principal of a small elementary school wants to select a simple random sample of 24 students. ... (Read 241 times)

Destiiny22

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on: Jul 24, 2018
The principal of a small elementary school wants to select a simple random sample of 24 students. The school has 12 classrooms with 18 students in each class. She decides to randomly select two students from each classroom.
 
  Is this a simple random sample?
  A) Yes, because a stratified sample is a type of simple random sample.
  B) No, because not all combinations of 24 students could have been chosen.
  C) Yes, because each student had an equal chance to be selected.
  D) No, because each student did not have an equal chance of being selected.
  E) Yes, because the students were selected at random.

Question 2

Which of these is not an advantage of using a stratified sample instead of a simple random sample?
 
  A) the stratified sample eliminates the need for randomization
  B) the stratified random sample allows you to get information about each stratum
  C) the stratified sample allows you to get more reliable estimates using the same sample size
  D) the stratified sample reduces sample to sample variability
  E) the stratified sample reduces bias
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janieazgirl

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Reply #1 on: Jul 24, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Destiiny22

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Reply 2 on: Jul 24, 2018
Great answer, keep it coming :)

xthemafja

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Reply 3 on: Yesterday
Excellent

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