In Performing a Hypothesis Test Where the Null Hypothesis Is

question 19

Multiple Choice

In performing a hypothesis test where the null hypothesis is that the population mean is 6.9 against the alternative hypothesis that the population mean is not equal to 6.9, a random sample of 16 items is selected.The sample mean is 7.1 and the sample standard deviation is 2.4.It can be assumed that the population is normally distributed.The observed "t" value for this problem is ___.

• A)0.05
• B)0.20
• C)0.33
• D)1.33
• E)1.43

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Definitions:

Irreversibility

The concept that some processes or actions cannot be undone or returned to their original state.

Egocentric Thinking

A way of thinking in which a person views everything in relation to themselves, without considering the perspectives or feelings of others.

Conservation

The understanding that certain properties of an object or substance do not change when its appearance is altered in some superficial way, essential in cognitive development according to Piaget.

Accommodation

In psychology, it refers to the process by which individuals adjust their schemas or understandings in response to new information.