If You Need a Sample of 2

question 20

Multiple Choice

If you need a sample of 2.841 mol of Na₂S, how many grams do you need?

• A)0.003640 g
• B)2.841 g
• C)78.05 g
• D)221.7 g

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Definitions:

Level Of Significance

A different phrasing for the threshold probability used to decide when a hypothesis test's results are too unlikely under the null hypothesis, prompting its rejection.

Null Hypothesis

A statistical hypothesis that assumes no significant difference or effect exists between certain datasets or parameters.

Alternative Hypothesis

The hypothesis that there is a significant difference between specified populations, any observed difference being due to sampling or experimental error.

Confidence Interval

A range of values that is likely to contain a population parameter with a certain level of confidence.