PSY315 wk4

1)For the situation in Part I, determine:

a)  the null and research hypotheses;

b)  the hypothesis test used (normal curve, single sample t-test, dependent samples t-test, independent samples t-test, ANOVA). For situations 1, 3, 4, and 5,

state whether the test is one-tailed or two-tailed;

c)  the degrees of freedom, if used.

d)  the critical value (cutoff score on the sampling or "comparison" distribution);

e)  your sample’s test score (this is already provided by each of the situations, but you must include it with your responses);

f)   your conclusion on whether to accept or reject the null hypothesis (you must show how the comparison of your cutoff score with your sample’s test score

leads to your conclusion). Part I Situation 1: A researcher wants to determine whether alcohol decreases viso-spatial ability. She selects two samples of 25 participants each. One group receives 5 ounces of alcohol, while the other group receives 5 ounces of water. She then measures viso-spacial ability using a test developed for this purpose. The test statistic was 2.81. 2)From your work or everyday life, please share: 1) An example of a situation in which you would use a single sample t-test; 2) an example of a situation in which  you would use a t-test for dependent means; and 3) an example of a situation in which you would use an independent samples t-test.  3)When would you use ANOVA at your place of employment or in everyday life?  Why? password: shiv

AFTER PAYMENT ENTER PASSWORD : "SHIV" TO UNLOCK THE SOLUTION