Take-home part of Exam 3

							                            CHAPTER 9 SOLUTION SHEET                                          STEP 4:
                                                                                              h. Indicate the decision (“reject Ho” or “do not reject Ho”), and the reason
               Hypothesis Testing for Single Mean and Single Proportion
                                                                                                alpha             decision                             reason for decision
In words, CLEARLY describe what the population parameter  or P represents:
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                                                                                              STEP 5: Write an appropriate conclusion, using COMPLETE SENTENCES.

In words, CLEARLY describe what the sample statistic X or P' represents:                      Conclusion:
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STEP 1:    a. Ho: _______________           Ha: ___________________
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           b. Significance Level  ______
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STEP 2: c. Distribution to use for the test: N ( _____ , ______) OR t with df = ____
                                                                                                             Confidence Interval for Single Mean and Single Proportion
STEP 3:
d. Test Statistic: indicate t or z and state its value: t or z (circle one) = _____________   Construct a Confidence Interval for the true population mean or proportion.
                                                                                              Use CL = 1   where  is the significance level you used for the hypothesis test.
e. p-value = ______________                                                                   Remember to use the appropriate t of z for the confidence level you are using.
                                                                                              (Do NOT use the t or z value of the test statistic from the hypothesis test.)
f. In 1 – 2 complete sentences, explain what the p-value means for this problem.
                                                                                              CL = _______                    Point Estimate: _________
  Interpretation of p-value: ________________________________________________
                                                                                              Error Bound (SHOW WORK to calculate): ___________
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g. Use the previous information to sketch a picture of this situation.
                                                                                              Confidence Interval:: ( ____________ , ____________ )
   CLEARLY, label and scale the horizontal axis and shade and label the region(s)
   orresponding to the p-value.
                                                                                              Interpretation of Confidence Interval:

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