Monday

December 22, 2014

December 22, 2014

Posted by **Melissa Williams** on Friday, March 18, 2011 at 11:30pm.

a. Can the researcher conclude that endurance scores with the sports drink are significantly higher than scores without the drink? Use a one- tailed test with α=.05.

b. Can the researcher conclude that endurance scores with the sports drink are significantly different than scores without the drink? Use a two- tailed test with α=.05.

c. You should find that the two tests lead to different conclusions. Explain why.

- statistics -
**Melissa Williams**, Friday, March 18, 2011 at 11:45pmBriefly explain how increasing sample size influences each of the following. Assume that all other factors are held constant.

a. The size of the z- score in a hypothesis test.

b. The size of Cohen’s d.

c. The power of a hypothesis test.

**Answer this Question**

**Related Questions**

statistics - A researcher is testing the effect of a new cold and flu medication...

statistics - Hypothesis testing on a paired sample, using the sign test. An ...

stats - A researcher hypothesizes that a new herbal supplement improves memory. ...

Psychological Statistics - A researcher predicts that watching a film on ...

Psychological Statistics - A researcher predicts that watching a film on ...

Psychological Statistics - A researcher predicts that watching a film on ...

statistics - 4. A college student is interested in whether there is a difference...

statistics - 4. A college student is interested in whether there is a difference...

Math-Statistics - A marketing research company needs to estimate which of two ...

statistics - The mean GPA (grade point averagE. of all male students at a ...