Calculating z alpha/2 and t alpha/2 on Tables II and IV

Statistics practice for final Be sure to review the following and have this information handy when taking Final GHA: Calculating z alpha/2 and t alpha/2 on Tables II and IV Find sample size for estimating population mean. Formula 8.3 p. 321 OCR. Stating H0 and H1 claims about variation and about the mean. Chapter 9 OCR. Type I and Type II errors p. 345 OCR. Confidence Interval for difference between two population means. Chapter 10 OCR p. 428 Pooled sample standard deviation. Chapter 10 OCR p. 397 What do Chi-Square tests measure? How are their degrees of freedom calculated? Chapter 12 OCR Find F test statistic using One-Way ANOVA.xls Be sure to enable editing and change values to match your problem. file://E:\One-Way%20ANOVA.xlsOne-Way ANOVA.xls Find equation of regression line used to predict. To do on Excel, go to a blank worksheet, enter x values in one column and their matching y values in another column. Click Insert – Select Scatterplot. Right click any one of the points (diamonds) on the graph. Left click “Add a Trendline.” Check “Display Equation on Chart” box. Regression equation will appear on chart. Try it here with No. 20 below. Practice Problems Chapter 8 Final Review 1) In which of the following situations is it reasonable to use the z-interval procedure to obtain a confidence interval for the population mean? Assume that the population standard deviation is known. A. n = 10, the data contain no outliers, the variable under consideration is not normally distributed. B. n = 10, the variable under consideration is normally distributed. C. n = 18, the data contain no outliers, the variable under consideration is far from being normally distributed. D. n = 18, the data contain outliers, the variable under consideration is normally distributed. Find the necessary sample size.