Mathematics, 22.01.2020 05:31 pannita
Suppose that you are asked to conduct a study to determine whether smaller class
sizes lead to improved student performance of fourth graders.
a. if you could conduct any experiment you want, what would you do? be
specific.
b. more realistically, suppose you can collect observational data on several
thousand fourth graders in a given state. you can obtain the size of their
fourth grade class and a standardized test score taken at the end of fourth
grade. why might you expect a negative correlation between class size
and test score?
c. would a negative correlation necessarily show that a smaller class size
cause better performance? explain.
Answers: 1
Mathematics, 21.06.2019 12:50, maguilarz2005
4. a spring scale is constructed so that each 0.10-n increment is separated by 0.50 cm. what spring constant is necessary for the scale to be accurate? -1.0n/cm -0.10n/cm -9.8 n/cm -0.20n/cm
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Mathematics, 21.06.2019 15:30, nsuleban9524
Astore manager records the total visitors and sales, in dollars, for 10 days. the data is shown in the scatter plot. what conclusion can the store manager draw based on the data? question 3 options: an increase in sales causes a decrease in visitors. an increase in sales is correlated with a decrease in visitors. an increase in visitors is correlated with an increase in sales.
Answers: 1
Mathematics, 21.06.2019 17:20, polarbear3787
Which system of linear inequalities is represented by the graph? x-3y > 6 and y? 2x + 4 x + 3y > 6 and y? 2x - 4 x - 3y > 6 and y? 2 - 4 x + 3y > 6 and y > 2x + 4 no be 2 -1.1 1 2 3 4 5 submit save and exit next mark this and retum be
Answers: 1
Mathematics, 21.06.2019 23:50, BreBreDoeCCx
You so much whoever answers with accuracy •the parent function of the graph of f(x) is the square root function, which was reflected across the x-axis. which of the following is the equation of f(x)?
Answers: 1
Suppose that you are asked to conduct a study to determine whether smaller class
sizes lead to...
sizes lead to...
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