Assume That the Current Date Is February 1,2003 At a Significance Level of

question 134

Multiple Choice

Assume that the current date is February 1,2003.The linear regression model was applied to a monthly time series based on the last 24 months' sales (from January 2000 through December 2002) .The following partial computer output summarizes the results. $$\begin{array} { l c c } \text { Coefficient } & \text { Estimate } & \mathrm { t } \\\text { Intercept } & 4.3 & 2.07 \\\text { Slope } & 1.6 & 2.98\end{array}$$
At a significance level of .05,what is the value of the rejection point in testing the slope for significance?

• A)1.717
• B)1.96
• C)2.074
• D)1.645
• E)2.064

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Definitions:

Population Mean

The mean value of all the elements within a population.

Sample Size

The number of observations or data points used in a study or experiment.

Confidence Level

The probability with which a statistical estimate can be expected to contain the true parameter value.

Confidence Interval

A band of values calculated from sample statistics, expected to enclose the value of a yet-to-be-identified population parameter.