Wednesday

April 1, 2015

April 1, 2015

Posted by **Beverly** on Tuesday, February 14, 2012 at 12:39am.

Based on your prediction about the relationship between the amount of coffee people drink and the number of hours they sleep, what is your H0 and what is your HA ?

Did you find a positive linear relationship or a negative linear relationship? How do you know?

• If you were pursuing this study, what calculations would you perform to describe this relationship and why?

• Without completing the calculations, assume that you obtained a significant result. What would you conclude about the relationship between coffee and sleep?

Did you find a positive linear relationship or a negative linear relationship? How do you know?

If you were pursuing this study, what calculations would you perform to describe this relationship and why?

Without completing the calculations, assume that you obtained a significant result. What would you conclude about the relationship between coffee and sleep?

- statistics/correlation relations -
**PsyDAG**, Tuesday, February 14, 2012 at 12:57pmWe have no access to your scatter diagram.

- statistics/correlation relations -
**nancyjean**, Saturday, September 8, 2012 at 4:45pm25

Marks: 1.00

The value of a correlation is reported by a researcher to be r = -0.5. Which of the following statements is correct?

Choose one answer. a. The x-variable explains 50% of the variability in the y-variable.

b. The x-variable explains -50% of the variability in the y-variable.

c. The x-variable explains 25% of the variability in the y-variable

d. The x-variable explains -25% of the variability in the y-variable

**Answer this Question**

**Related Questions**

statistics - Imagine that you are interested in whether there is a relationship ...

HELP ASAP ( COLLEGE STATISTICS) - Describe in words the nature of the ...

Math - Jared drew a scatter plot comparing the number of hours worked and the ...

statistics - Please Help! My book and instructor are no help. Please help me ...

Algebra - Which of the following types of information is suited for display on a...

Math - Jade counted the number of the students on each sports time at her school...

statistics - Given the following scatter diagram , the sample correlation ...

Statistics - In a study of caffeine and stress, college students indicate how ...

math - which of the following correlation demonstrate a casual relationship? 1 ...

math - which of the following correlation demonstrate a casual relationship? 1 ...