Exhibit 12-4
Regression Analysis Was Applied Between Sales Data Y $\hat { Y }$

question 106

Multiple Choice

Exhibit 12-4
Regression analysis was applied between sales data Y in $1,000s) and advertising data x in $100s) and the following information was obtained.
= 12 + 1.8 x
$\hat { Y }$ n = 17
SSR = 225
SSE = 75
Sb₁ = 0.2683
-Refer to Exhibit 12-4. The critical t value for testing the significance of the slope at 95% confidence is

• A) 1.753
• B) 2.131
• C) 1.746
• D) 2.120

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Definitions:

Billion Years

A period of time equal to 1,000 million years, often used in geological and astronomical contexts to describe the age of Earth or the universe.

Mineral Grains

individual particles or crystals within a rock, defining its texture and often determining its properties and classification.

Cenozoic

The current geological era, beginning 66 million years ago, marked by significant development of mammals.

Geologic Timescale

A chronological dating system used by geologists and other scientists to describe the timing and relationships of events in Earth's history.