-Jamie Is Preparing to Take His SAT Tests

question 61

Essay

$$\begin{array}{l}\text { Hours studied }\\\begin{array} { c c } \text { (per week) } & \text { SAT Scores } \\\hline 2 & 900 \\4 & 1000 \\6 & 1050 \\8 & 1075 \\10 & 1090\end{array}\end{array}$$
-Jamie is preparing to take his SAT tests.The table above shows how Jamie's score depends on the number of hours a week Jamie studies
a.Plot the relationship in the figure,putting the hours studied on the horizontal axis.

b.Is the relationship you plotted positive or negative?
c.What happens to the slope of the relationship as hours studied increase?
d.Suppose Jamie can enroll in an SAT prep course and,by so doing,for every possible number of hours he studies,his score will be 100 points higher.Plot the new relationship between the number of hours studied and Jamie's SAT score in the figure.
e.How many variables are involved in the figure you just completed?

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Definitions:

Point Estimate

A single value estimate of a population parameter that serves as the best guess or prediction of the parameter.

Confidence Limits

Confidence limits define the range within which a population parameter is estimated to lie with a certain level of confidence.

Standard Error

A measure of the dispersion or spread of sample means around the population mean.

Confidence Interval

A range of values, derived from a data set, that is likely to contain the value of an unknown population parameter.