Figure 11.7 shows power curves for sample sizes of 13 and 29. Using these curves as frames of reference, indicate in general terms (either less than 13, between 13 and 29, or greater than 29) the required sample size to detect an effect size of
(a) 4 with power .80
(b) 8 with power .80
(c) 8 with power .50
(d) 10 with power .80
Figure 11.7

Transcribed Image Text:

Power Curve for 1-Sample z Test 1.0 Sample Size 29 13 Assumptions 0.8 Alpha StDev 0.05 15 0.6 Alternative> 0.4 0.2 0.0 4 6 10 12 14 Difference (Effect Size)