Exam 4 Study Guide: Chapters 18-20

  1. Write the claim using symbols. Define any subscripts that are necessary. Ten parts.
  2. The observed value, spread, and critical values are given. Conduct a hypothesis test and justify your answer.
  3. Correlation and regression - the regression equation and summary statistic are given. Look at homework 27.
    1. Draw horizontal and vertical lines to indicate the centroid.
    2. Complete the table of coefficients
    3. Give a conclusion about the y-intercept or slope
    4. Use the regression equation to estimate a value of the response variable.
    5. Use the equation to estimate a value of the dependent variable.
    6. This table is completely blank to begin with. Look at homework 28. There is an explanation of how to complete the ANOVA table from the summary statistics [powerpoint].
    7. Find the value of the coefficient of determination, r2
  4. Multiple Regression - the table of coefficients is given. Look at homework 29.
    1. Give a conclusion based on the table of coefficient p-values.
    2. The Sum of Squares and one of the df is given, complete the ANOVA table.
    3. Write the null and/or alternative hypothesis for the ANOVA table.
    4. Make a conclusion.
    5. Know how many df there are for the F distribution.
    6. Find the value of the adjusted-R2 from the ANOVA table.
  5. Test for independence / contingency table - the observed frequencies are given. Look at homework 23.
    1. Find the probabilities of some events from the table. Five parts.
    2. Find the expected frequency for one of the cells in the table
    3. Give the degrees of freedom.
    4. The test statistic and p-value are given, make a conclusion.
  6. One way analysis of variance - summary information is given. Look at homework 24.
    1. Write the null and alternative hypothesis.
    2. Complete the ANOVA table. The sums of squares and the p-value are given.
    3. Give a conclusion
  7. Make a picture to illustrate a hypothesis test. Be sure to completely label it.
  8. Two-way analysis of variance. Look at homework 25.
    1. Complete the two-way ANOVA table. The sum of squares and the p-values are given.
    2. Know the three null and alternative hypotheses being tested with the table
    3. Give conclusions based on results from the table
  9. A probability distribution is given. Find the expected value (mean).
  10. Find four numbers that have the given mean, median, and mode.

Take Home Exam

  1. Conduct a hypothesis test from start to finish without all of the step by step prompting.
    1. Identify the type of test (1 proportion, 2 proportions, chi-square goodness of fit test, test for independence, 1 mean, 2 independent means, 1 way ANOVA, 2 way ANOVA, paired means, correlation, or regression).
    2. Write the null and alternative hypotheses
    3. Find the test statistic and p-value and copy down the output from Minitab.
    4. Give a decision and conclusion
  2. Same instructions as take home exam question 1
  3. Same instructions as take home exam question 1
  4. Same instructions as take home exam question 1
  5. Normal distribution application problem. Use the probability calculator to find probabilities or z-scores. Three parts.



You may use a sheet of notes on this exam. Here are the guidelines for the notesheet.

You can only use your notesheet for 20 minutes. After that time, you must turn in your test whether or not you are done with it.

Points per problem

# 1 2 3 4 5 6 7 8 9 10 T1 T2 T3 T4 T5 Total
Pts 30 6 12 16 15 10 6 14 4 4 6 6 6 6 9 150