Whether the given study depicts an observational study or a designed experiment.

Khaleesi Herbert 2021-02-03 Answered
Whether the given study depicts an observational study or a designed experiment.
You can still ask an expert for help

Expert Community at Your Service

  • Live experts 24/7
  • Questions are typically answered in as fast as 30 minutes
  • Personalized clear answers
Learn more

Solve your problem for the price of one coffee

  • Available 24/7
  • Math expert for every subject
  • Pay only if we can solve it
Ask Question

Expert Answer

Answered 2021-02-04 Author has 94 answers
Given info:
A study was conducted to observe the number of sexual innuendos and curse words between the two groups of movies namely PG-13 and PG. For this study the researcher had taken randomly selected 25 PG-13 movies and 25 PG movies.
Observational study: An observational study measures the values of a variable without influencing the values of response variables and explanatory variables. Thus, in observational study, researchers can observe the behaviors of the individuals without influencing the outcome of that study.
Designed experiment: In a designed experimental study, researchers allocate individuals to a certain group under study and change the values of an explanatory variable intentionally. After this, the values of the response variable for each group are recorded.
Researchers (parent group) do not allocate the individual movies into some group of study and the researchers do not control the explanatory variable.
Thus, this study is not a designed experiment.
The given study is conducted such that no attempt has been made to influence the value of the explanatory variable. Researchers only study the number of sexual innuendos and curse words that occur in each movie.
Therefore, the researchers simply recorded the measurements without influencing the individuals of the study.
Thus, the given study is an observational study.
Not exactly what you’re looking for?
Ask My Question

Expert Community at Your Service

  • Live experts 24/7
  • Questions are typically answered in as fast as 30 minutes
  • Personalized clear answers
Learn more

Relevant Questions

asked 2021-01-31
The centers for Disease Control reported the percentage of people 18 years of age and older who smoke (CDC website, December 14, 2014). Suppose that a study designed to collect new data on smokers and Questions Navigation Menu preliminary estimate of the proportion who smoke of .26.
a) How large a sample should be taken to estimate the proportion of smokers in the population with a margin of error of .02?(to the nearest whole number) Use 95% confidence.
b) Assume that the study uses your sample size recommendation in part (a) and finds 520 smokers. What is the point estimate of the proportion of smokers in the population (to 4 decimals)?
c) What is the 95% confidence interval for the proportion of smokers in the population?(to 4 decimals)?
asked 2020-11-08

A researcher is conducting a study to examine the effects of cognitive behavior therapy for the treatment of social anxiety in a sample of 16 participants. He measures the social anxiety scores of participants before the tratment and then again after treatment and the resulting data is as follows:
a) What type of design is this study (single-sample, independent measures, repeated measures)
b)State the null and alternate hypotheses
c) Using an α level of .05(α=.05), identify the critical values of t for a 2-tailed test.

asked 2021-02-01
To compare and contrast:Observational studies and designed experiments and to identify the study that allows a researcher to claim causality.
asked 2020-12-29
Describe a study design to test whether consuming fish atleast twice a week causes decreased activity in rheumatoid arthritis patients.
asked 2022-04-27

B. Given the population 1, 2, 3, 4, 6, and 8. Suppose sample size of 3 are drawn from this 
4. What is the mean ( 𝜇 ) and the variance ( 𝜎
) of the population?
5. How many different sample size n = 3 can be drawn from this population? List them with 
their corresponding means.
6. What is the mean ( 𝜇X̅ ) and the variance ( 𝜎
X̅ ) of the sampling distribution of the sample 

asked 2021-02-18
To explain: whether the given study on male health professional is an observational study with a cohort design, an observational study with case-control design or an experiment
asked 2020-11-29
State whether the investigation in question is an observational study or a designed experiment. Justify your answer in each case.
The Salk Vaccine. In the 1940s and early 1950s, the public was greatly concerned about polio. In an attempt to prevent this disease, Jonas Salk of the University of Pittsburgh developed a polio vaccine. In a test of the vaccine’s efficacy, involving nearly 2 million grade-school children, half of the children received the Salk vaccine, the other half received a placebo, in this case an injection of salt dissolved in water. Neither the children nor the doctors performing the diagnoses knew which children belonged to which group, but an evaluation center did. The center found that the incidence of polio was far less among the children inoculated with the Salk vaccine. From that information, the researchers concluded that the vaccine would be effective in preventing polio for all U.S. school children, consequently, it was made available for general use.