Selling Price and Amount Spent Advertising Were Entered into a Multiple

question 8

Multiple Choice

Selling price and amount spent advertising were entered into a multiple regression to Determine what affects flat panel LCD TV sales.The correct null and alternative hypotheses For testing the regression coefficient of Price is

• A)\(H _ { 0 } : \beta _ { \mathrm { P } } \neq 0\) vs. \(\mathrm { H } _ { \mathrm { A } } : \beta _ { \mathrm { P } } = 0\)
• B) \(\mathrm { H } _ { 0 } : \beta _ { \mathrm { P } } \geq 0\) vs. \(\mathrm { H } _ { \mathrm { A } } : \beta _ { \mathrm { P } } < 0\)
• C) \(\mathrm { H } _ { 0 } : \beta _ { \mathrm { P } } \leq 0\) vs. \(\mathrm { H } _ { \mathrm { A } } : \beta _ { \mathrm { P } } > 0\)
• D) \(\mathrm { H } _ { 0 } : \beta _ { \mathrm { P } } = 0\) vs. \(\mathrm { H } _ { \mathrm { A } } : \beta _ { \mathrm { P } } \neq 0\)
• E) \(\mathrm { H } _ { 0 } :\) The regression is not significant vs. \(\mathrm { H } _ { \mathrm { A } }\) : The regression is significant.

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Definitions:

Reliability

The extent to which a measurement instrument yields reliable and uniform outcomes.

Validity

The degree to which an idea, inference, or measurement is substantiated and probably accurately reflects reality.

Reliability

How much a testing tool delivers steady and dependable results throughout time.

Validity

The degree to which a notion, conclusion, or measurement is solidly based and accurately reflects reality.