# Then if the z score is falls below or outside your

• Homework Help
• 9
• 90% (10) 9 out of 10 people found this document helpful

This preview shows page 4 - 7 out of 9 pages.

sample's Z scores from step four to (the cutoff Z score). Then if the Z score is falls below or outside your cutoffs then you would reject the null hypothesis which means that the research hypothesis is true or vice versa (Aron, Coups, & Aron, 2013, Chapter 4: Introduction to Hypothesis Testing).
3.A researcher wants to know whether people who regularly listen to radio talk shows are more or less likely to vote in national elections than people in general.
WEEK 3 PRACTICE WORKSHEET5a.State the research hypothesis and null hypothesis
b.Would the researchers use a one- or two-tailed Ztest?
4.The general population (Population 2) has a mean of 30 and a standard deviation of 5, and the cutoff Zscore for significance in a study involving one participant is 1.96. If the raw score obtained by the participant is 45, what decisions should be made about the null and research hypotheses?
WEEK 3 PRACTICE WORKSHEET6
5.One hundred people are included in a study in which they are compared to a known population that has a mean of 73, a standard deviation of 20, and a rectangular distribution.a.μM = 73b.σM = 20c.The shape of the comparison distribution is Rectangular or uniformed.d.If the sample mean is 75, the lower limit for the 99% confidence interval is 69.84 lowere.If the sample mean is 75, the upper limit for the 99% confidence interval is 80.16 upperf.If the sample mean is 75, the lower limit for the 95% confidence interval is 71.08 lowerg.If the sample mean is 75, the upper limit for the 95% confidence interval is 78.92 upper
• • • 