Mathematics, 08.04.2020 02:10 trinityhayes347
The marketing firm in problem 1 has decided that age may also have an affect on attention span. They decide to assign the children to groups of fifteen 9 to 10 year olds, fifteen 7 to 8 year olds, and fifteen 5 to 6 year olds. Within each group, the children are asked to watch one 60-second commercial for one of the three types of toys and their attention spans are measured in seconds.
a. Is this an experiment or an observational study?
b. If it is an experiment, is it randomized or block design?
c. If it is an experiment, identify the explanatory and response variables.
d. If this is an experiment, draw a diagram representing the levels and treatments.
Answers: 3
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 13:30, rhiannonwheatcr6619
The graph shown below expresses a radical function that can be written in the form f(x)=a(x+k)1/n+c what does the graph tell you about the value of n in this function
Answers: 3
Mathematics, 21.06.2019 15:00, babygirl123468
Martha needs 22.25 strawberries for every 5 smoothies she makes. complete the table to see how many strawberries she would need to make 10 smoothies and 20 smoothies.
Answers: 1
Mathematics, 22.06.2019 00:00, kittenface3428
28 x 12 + 34 = ? it's for a test that if i fail on i will not proceed into the honor roll society i always dreamed of!me! worth 50 !
Answers: 1
You know the right answer?
The marketing firm in problem 1 has decided that age may also have an affect on attention span. They...
Questions in other subjects:
English, 27.07.2019 02:30
History, 27.07.2019 02:30
