A Hypothesis Regarding the Weight of Newborn Infants at a Community

question 3

Multiple Choice

A hypothesis regarding the weight of newborn infants at a community hospital is that the mean is 6.6 pounds. A sample of seven infants is randomly selected and their weights at birth are recorded as 9.0, 7.3, 6.0, 8.8, 6.8, 8.4, and 6.6 pounds. What is the decision for a statistical significant change in average weights at birth at the 5% level of significance?

• A) Fail to reject the null hypothesis and conclude the mean is 6.6 lb.
• B) Reject the null hypothesis and conclude the mean is higher than 6.6 lb.
• C) Reject the null hypothesis and conclude the mean is lower than 6.6 lb.
• D) Cannot calculate because population standard deviation is unknown.

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Definitions:

Numeraire

is a standard unit of measurement in economic models used to express prices and exchange rates.

Edgeworth Box

A diagram used in economics to show the distribution of resources and the allocation of goods in a two-person, two-good economy.

Contract Curve

In economics, the curve that represents the set of Pareto efficient allocations in an Edgeworth Box diagram.

Utility Function

A symbolic depiction illustrating the ranking of preferences a consumer holds across various goods or outcomes.