Diagram the situation described in Exercise 15.3 along the lines of Figure 15.2.

Exercise 15.3

In Section 12.3 we looked at a set of data on whether children who are stressed from their parents’

divorce tend to tell us what they think we want to hear, rather than what they really feel.

For those data the test on H₀ was not significant, even though the sample size was 36. Suppose that the experimenters had, in fact, actually estimated the mean and standard deviation of the population of stressed children exactly.

a) What is the effect size in question?

b) What is the value of δ for a sample size of 36?

c) What is the power of the test?

Transcribed Image Text:

Figure 15.2 Sampling distribution of X under Ho and H. H Power Critical value