Mathematics, 19.10.2019 01:10 Geo777
Screens, teens, and psychological well-being. in a study of three nationally representative large- scale data sets from ireland, the united states, and the united kingdom (n = 17,247), teenagers between the ages of 12 to 15 were asked to keep a diary of their screen time and answer questions about how they felt or acted. the answers to these questions were then used to compute a psychological well-being score. additional data were collected and included in the analysis, such as each child’s sex and age, and on the mother’s education, ethnicity, psychological distress, and employment. the study concluded that there is little clear-cut evidence that screen time decreases adolescent well-being.35
(a) what type of study is this?
(b) identify the explanatory variables.
(c) identify the response variable.
(d) comment on whether the results of the study can be generalized to the population, and why.
(e) comment on whether the results of the study can be used to establish causal relationships.
Answers: 1
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Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip
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Find the greatest common factor of the followig monomials 46g^2h and 34g^6h^6
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Mathematics, 21.06.2019 22:20
As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is
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Screens, teens, and psychological well-being. in a study of three nationally representative large- s...
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