Suppose the Rate of Change of the Percentage of Low-Birthweight

question 24

Multiple Choice

Suppose the rate of change of the percentage of low-birthweight babies (less than 5 pounds 8 ounces) in 2000 can be modeled by percentage points per pound when the mother gains w pounds during pregnancy. The model is valid for the weights between 18 and 43 pounds. Estimate, to two decimal places, the area of the region between the graph of P and the w-axis from to using 5 midpoint rectangles. Interpret your answer.

• A) In 2000, there was a 12.41% decrease in the number of low-birthweight babies whose mothers gained between 18 and 43 pounds.
• B) In 2000, there was a 6.60% increase in the number of low-birthweight babies whose mothers gained between 18 and 43 pounds.
• C) In 2000, there was a 4.27% decrease in the number of low-birthweight babies whose mothers gained between 18 and 43 pounds.
• D) In 2000, there was a 3.58% increase in the number of low-birthweight babies whose mothers gained between 18 and 43 pounds.
• E) In 2000, there was a 2.76% decrease in the number of low-birthweight babies whose mothers gained between 18 and 43 pounds.

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Definitions:

Psychoanalytic Theory

A theory of personality organization and the dynamics of personality development that guides psychoanalysis, developed by Sigmund Freud.

Social Cognitive Theory

A theory in psychology that suggests learning occurs in a social context and can happen purely through observation or direct instruction, even in the absence of motor reproduction or direct reinforcement.

Coregulation Theory

A concept in psychology that suggests a dynamic, reciprocal relationship in emotional or behavioral regulation between individuals, such as in close relationships.

Cognitive-Developmental Theory

A theory of the stages through which children's cognitive abilities develop, originally proposed by Jean Piaget, highlighting the importance of mental processes in understanding the world.