A Hypothesis Regarding the Weight of Newborn Infants at a Community

question 7

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. If α = 0.05,what is the critical t-value?

• A)−2.365
• B)±1.96
• C)±2.365
• D)±2.447

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Definitions:

Coefficient Of Correlation

A statistical measure that calculates the strength and direction of a linear relationship between two variables.

Coefficient Of Determination

A statistical measurement that assesses the proportion of variance in the dependent variable that is predictable from the independent variable(s), often denoted as R^2.

SSR

Sum of Squares due to Regression, a measure in statistics that quantifies the explanation of variance by the linear regression model.

SSE

Sum of Squared Errors, a measure used in statistics to describe the total deviation of observed values from the values expected under a model.