# Take-home part of Exam 3

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```							                            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:
______            ____________________          _______________________
___________________________________________________________________________

___________________________________________________________________________
STEP 5: Write an appropriate conclusion, using COMPLETE SENTENCES.

In words, CLEARLY describe what the sample statistic X or P' represents:                      Conclusion:
___________________________________________________________________________                   ___________________________________________________________________
___________________________________________________________________________
___________________________________________________________________
STEP 1:    a. Ho: _______________           Ha: ___________________
___________________________________________________________________
b. Significance Level  ______
___________________________________________________________________
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): ___________
_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

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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