Mathematics, 17.02.2021 21:10 leshia39
Select all the correct answers.
A group of scientists is conducting an experiment on the effects of media on children. They randomly select 100 children and randomly assign each child to one of four treatment groups. Each treatment group has a specific amount of screen time during a one-week time frame. The first group has no screen time, the second group has two hours of screen time, the third group has four hours of screen time, and the fourth group has six hours of screen time.
After the first week, the scientists conduct the same experiment, with the same subject groups, for three more weeks so that each group experiences each of the four treatments.
Which statements about this study are true?
the study uses blocking
this study uses random sampling
this study uses blinding
this study uses a control group
this study uses a repeated measures design ​
Answers: 2
Mathematics, 21.06.2019 14:30
Which interval for the graphed function contains the local maximum? [–3, –2] [–2, 0] [0, 2] [2, 4]
Answers: 2
Mathematics, 21.06.2019 15:30
Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.
Answers: 1
Mathematics, 21.06.2019 20:00
Which statement about the annual percentage rate (apr) is not true?
Answers: 3
Select all the correct answers.
A group of scientists is conducting an experiment on the effects of...
Health, 11.05.2021 17:00
Business, 11.05.2021 17:00
History, 11.05.2021 17:00
Mathematics, 11.05.2021 17:00
Mathematics, 11.05.2021 17:00
Mathematics, 11.05.2021 17:00
Mathematics, 11.05.2021 17:00
Physics, 11.05.2021 17:00
Chemistry, 11.05.2021 17:00
Mathematics, 11.05.2021 17:00
Mathematics, 11.05.2021 17:00