A new meditation technique based on making barnyard animal noises promises to calm people, but you might be skeptical. You can imagine that it could cause stress to sit around oinking and mooing. To test the therapy, you ask 16 people to make animal noises, then ask them to rate emotion on a scale from 1-7, with 1 representing “Very Calm,” and 7 representing “Very Stressed.” You happen to know that people who don’t oink and moo have an average emotion rating of 4, with a standard deviation of 2.57. Below are the ratings from the 16 people who made animal noises.

4             5             6             5             4             3             7             4             

3             4             4             3             5             6             5             4

12.         Write the null and alternative hypotheses for this example.

13.         Write the specific type of analysis you will use.

14.         Sketch the z-distribution, and include a p-value for the rejection region(s) as well as zcrit value(s).

15.         Analyze these data and write the zobt on your sketch of the z-distribution.

16.         Provide a statement of a significant or nonsignificant effect.

17.         Write the obtained value.

18.         Reject or fail to reject H0.

19.         Infer your results back to the population.

20.         results in plain English.

21. A one-sample t test is used with a sample of 30 scores. The df for this t are.

a. 31

b. 29

c. 32

d. 28

22. From a statistical point of view, results are “significant” because they occur..

a. rarely by chance when the null hypothesis is true

b. rarely by chance with small samples

c. rarely by chance when the alternative hypothesis is true

23.-25. Design the four part table for accepting/reject the null hypothesis and the types of errors.

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