1. If you have 100 observations in your sample with a mean of 30 mg and a sd of 1.2 then 95 % of you data is between 28.8 mg and 31.2 mg.

True

False

2. The spread /shape of the data over all of the values for the given variable is called the accuracy of the data.

True

False

3. A 95 % confidence interval of (x, y) means that we are 95% confident that the true mean is between x and y.

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True

False

4. Spearman's rho can be used when one variable is nominal.

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True

False

5. The normal distribution could be bimodal.

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True

False

6. Unusual values or outliers typically lay at least 2 standard deviations beyond the mean of the sample.

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True

False

7. A benefit of random sampling is that you get a sample that is different from the population of interest.

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True

False

8. For a two sided test you are interested in the direction of the difference.

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True

False