8. A new program to help reduce childhood obesity was recently studied in Granollers, Spain.The city of Granollers has 16 primary schools that were randomly divided into two groups of 8schools each. In one group of schools, new lesson plans were used for three hours per week thatincluded activities focusing on healthy eating and encouraging physical activity. The families ofthe children at those schools were given healthy recipes and information about local parks foroutdoor activities. In the other 8 schools instruction continued as normal. After two years of theprogram, it turned out that the average body mass index of the children at the schools with thenew program was significantly lower than the average for the children at the other schools andthat the amount of fresh fruit and fish in their diet and the amount of after school exerciseincreased significantly.a. Is this an experiment or an observational study? Explainb. The subjects and school administrators all knew which of the two comparison groups theybelonged to. Describe how that might affect the results of the studyc. The word "significantly in the last sentence of the paragraph indicatesthat the new programs are likely to be effective in other cities.B. that the differences between the children at the two groups of schools were very large.C. that the differences between the children at the two groups of schools could not beeasily explained by random chanceD. that the new lesson plans must have caused the differences seen.

Question
Asked Mar 6, 2019
78 views
8. A new program to help reduce childhood obesity was recently studied in Granollers, Spain.
The city of Granollers has 16 primary schools that were randomly divided into two groups of 8
schools each. In one group of schools, new lesson plans were used for three hours per week that
included activities focusing on healthy eating and encouraging physical activity. The families of
the children at those schools were given healthy recipes and information about local parks for
outdoor activities. In the other 8 schools instruction continued as normal. After two years of the
program, it turned out that the average body mass index of the children at the schools with the
new program was significantly lower than the average for the children at the other schools and
that the amount of fresh fruit and fish in their diet and the amount of after school exercise
increased significantly.
a. Is this an experiment or an observational study? Explain
b. The subjects and school administrators all knew which of the two comparison groups they
belonged to. Describe how that might affect the results of the study
c. The word "significantly in the last sentence of the paragraph indicates
that the new programs are likely to be effective in other cities.
B. that the differences between the children at the two groups of schools were very large.
C. that the differences between the children at the two groups of schools could not be
easily explained by random chance
D. that the new lesson plans must have caused the differences seen.
help_outline

Image Transcriptionclose

8. A new program to help reduce childhood obesity was recently studied in Granollers, Spain. The city of Granollers has 16 primary schools that were randomly divided into two groups of 8 schools each. In one group of schools, new lesson plans were used for three hours per week that included activities focusing on healthy eating and encouraging physical activity. The families of the children at those schools were given healthy recipes and information about local parks for outdoor activities. In the other 8 schools instruction continued as normal. After two years of the program, it turned out that the average body mass index of the children at the schools with the new program was significantly lower than the average for the children at the other schools and that the amount of fresh fruit and fish in their diet and the amount of after school exercise increased significantly. a. Is this an experiment or an observational study? Explain b. The subjects and school administrators all knew which of the two comparison groups they belonged to. Describe how that might affect the results of the study c. The word "significantly in the last sentence of the paragraph indicates that the new programs are likely to be effective in other cities. B. that the differences between the children at the two groups of schools were very large. C. that the differences between the children at the two groups of schools could not be easily explained by random chance D. that the new lesson plans must have caused the differences seen.

fullscreen
check_circle

Expert Answer

Step 1

In an experimental study the subjects are radomised into groups and researcher manipulates a variable to study its effects. So here we can see treatments are assigned to subjects. It does have a control group and a treatment group.

In observational study there are no treatments assigned to subjects and researcher is not able to control which subjects are assigned to groups and which treatme...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Math

Statistics

Related Statistics Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: How much do wild mountain lions weigh? Adult wild mountain lions (18 months or older) captured and r...

A: In this question, we have the weighs of adult wild mountain lions, which is681071251276064 Using tha...

question_answer

Q: The standard treatment for a disease works in 0.65 of all patients. A new treatment is patients (of ...

A: (a)The provided details are:

question_answer

Q: Question attached. Can the proof be shown by contradiction?  Any help would be appreciated.

A: You've guessed correctly. This can be proved by contradiction as you'll see in the ensuing steps.

question_answer

Q: In general, we want to see if elderly primes will lead people to feel elderly feelings and see an ol...

A: The independent variable is that which is changed by the experimenter to test the outcome of the dep...

question_answer

Q: Find the standard deviation, s, of sample data summarized in the frequency distribution table given ...

A: Using the provided formula, the sample standard deviation of the provided frequency distribution is ...

question_answer

Q: Use software or a calculator to find the​ range, variance, and standard deviation of the following b...

A: As data of temperature is not provided here. Here i can show you how to find the range, standard dev...

question_answer

Q: You are asked to design a study to investigate the effectiveness of the Atkins diet (IV = diet, DV =...

A: Independent t test:Independent t test determines whether there is significant difference between the...

question_answer

Q: Assume that we have two normal distributions both with means 0 and standard deviations σ1 and σ2. If...

A: We are given two normal distributions with mean = 0 and standard deviations σ1 and σ2.

question_answer

Q: Consider the probability distributions you have studied so far. Which of the following distributions...

A: Discrete distribution:If the probability of outcome of a statistical distribution is finite, then it...