Jessie and Sarah Are 6-Year-Old Twins

question 315

Multiple Choice

Jessie and Sarah are 6-year-old twins.Their mother gives each child one scoop of macaroni for lunch.What must she be careful to do,and why?

• A) Let each child dish up her own macaroni, because six-year old children are egocentric.
• B) Let each child dish up her own macaroni, because six-year old children have difficulty with the issue of conservation.
• C) Use identical sized plates, because six-year old children are egocentric.
• D) Use identical sized plates, because six-year old children have difficulty with the issue of conservation.

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Definitions:

Rejection Region

The range of values for which the null hypothesis is not considered plausible and is rejected in hypothesis testing.

Single-Factor ANOVA

A statistical technique used to compare the means of three or more samples using variance analysis on a single independent variable.

Test Statistic

A calculated value used in statistical hypothesis testing to determine whether to reject the null hypothesis.

Squares

In statistics, refers to the process of squaring each difference between individual data points and the mean, used in the calculation of variance and standard deviation.