Determine whether the follow descriptions correspond to an observational study or an experimental study. Write "EXPERIMENTAL" for experimental study and "OBSERVATIONAL" for observational study (without quotations). Avoid MISSPELLING errors by copying and pasting the words above as they are!!!) (a) Cartons on milk are opened, and the volumes of the contents are measured. answer: OBSERVATIONAL (b) The effectiveness of lecture teaching is tested with a sample of students who have completed numerous lecture style courses. answer: EXPERIMENTAL (c) Studying how patients respond when given a placebo. answer: OBSERVATIONAL
Added by Kim D.
Close
Step 1
In this case, there is no intervention or manipulation of variables, so it is an observational study. Answer: $\boxed{\text{OBSERVATIONAL}}$ Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 100 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
determine whether the following descriptions correspond to an observational study or an experiment (a) classifying different stages of a child's language development (b) a new antibiotic is tested in effectiveness by recording how the drug works on patients that already take the drug (c) studying how patients respond when given a placebo as opposed to latest drug
Christopher D.
Decide if each of the following describes an observational study or an experiment. Select an answer: Experiment or Observational Study. The hair color of shoppers at the mall was recorded. Select an answer: Observational Study. A drug is given to a group of people, and their reactions are observed. Select an answer: Experiment. A group of students is told to listen to music while taking a test, and their results are compared to a group not listening to music. Select an answer: Experiment. The temperature on randomly selected days throughout the year was measured. Select an answer: Observational Study. The gender of children born in January was tallied. Select an answer: Observational Study. The growth rate of bacteria is compared before and after adding alcohol. Select an answer: Experiment.
Sri K.
Determine whether the given description corresponds to an observational study or an experiment. In a study of 366 women with a particular disease, the subjects were divided into two groups to test the after-effects of a certain pill. Group of answer choices A. The given description corresponds to both an observational study and an experiment. B. The given description corresponds to an observational study. C. The given description does not provide enough information to answer this question. D. The given description corresponds to an experiment.
Qudsiya A.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD