If the relationship between two variables has a linear ...

[humphriesbr@me.com]

If the relationship between two variables has a linear correlation coefficient (r) = 0.30, what is the coefficient of determination?

Question 2

A two-tailed t-test is appropriate when the researcher has a directional hypothesis implying that an observed mean can only be greater than or less than a hypothesized value.
 
 Indicate whether the statement is true or false

[anoriega3]

Answer to Question 1

r2, the coefficient of determination, is 0.09.

calculation: (0.30.3) = 0.9

Answer to Question 2

F
A one-tailed test is appropriate in this situation. A two-tailed test is one that tests for differences from the population mean that are either greater or less.

[humphriesbr@me.com]

Thanks for the timely response, appreciate it

[amandanbreshears]

Gracias!