THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 88

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A sales manager is interested in determining the relationship between the amount spent on advertising and total sales.The manager collects data for the past 24 months and runs a regression of sales on advertising expenditures.The results are presented below but,unfortunately,some values identified by asterisks are missing.
SUMMARY OUTPUT
-In a regression problem,a coefficient of determination 0.90 indicates that:

• A)90% of the y values are positive.
• B)90% of the variation in y can be explained by the regression line.
• C)90% of the x values are equal.
• D)90% of the variation in x can be explained by the regression line.

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Definitions:

Amenorrhea

The absence of menstruation in someone of reproductive age under conditions expected for menstruation.

Parotid Swelling

Inflammation or enlargement of the parotid glands, the largest of the salivary glands, which can be due to infection, blockage, or other medical conditions.

Lanugo

Fine, soft hair that covers the body and limbs of a fetus or newborn, which is usually shed before or shortly after birth.

Rigidity, Perfectionism

A tendency to be extremely strict and demanding of oneself, aiming for flawlessness in all aspects of life.