A Researcher Predicts That Scores in Treatment a Will Be

question 71

Multiple Choice

A researcher predicts that scores in treatment A will be higher than scores in treatment B.If the mean for the 10 participants in treatment A is 4 points higher than the mean for the 10 participants in treatment B and the data produce t = 2.095,what decision should be made?

• A)With α = .05, reject H0 for both a one-tailed and a two-tailed test
• B)With α = .05, fail to reject H0 for both a one-tailed and a two-tailed test
• C)With α = .05, reject H0 for a one-tailed test but fail to reject for a two-tailed test
• D)With α = .05, reject H0 for a two-tailed test but fail to reject for a one-tailed test

---

Definitions:

Population Means

The average value of a particular characteristic across the entire population under study.

Total Number

The complete count or amount of items or units being considered.

Observations

Data points or individual pieces of data collected during an experiment or survey, used for analysis and conclusions.

Sample Means

are the average values calculated from a subset of a population.