If the Correlation Coefficient Is a Positive Value, Then the Slope

question 78

Multiple Choice

If the correlation coefficient is a positive value, then the slope of the regression line:

• A)must also be positive
• B)can be either negative or positive
• C)can be zero
• D)must be negative
• E)none of the above

Understand the Central Limit Theorem and its implications for the distributions of sample means and differences between two sample means.

Calculate and interpret the test statistic for hypothesis tests involving a single population mean, a single population proportion, and the difference between two population means or proportions.

Determine sample sizes needed for estimating population parameters within a specified margin of error.

Formulate null and alternative hypotheses for testing differences between population means and proportions.

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