This preview shows pages 1–4. Sign up to view the full content.

RES/342 ANSWERS Applications 4 – Final Examination (25 points) Name: Read this carefully : Type your name on the line above. This is an individual examination. You must answer the applications on this form. Non-use of the form will result in a deduction of ½ of the points for each exercise, not including any deductions that may be made based on your results. You must s how all formulas (by number or the exact formula) and calculations . Note there is a box in each test statistic part of the application. After you show your calculations, type only the test statistics value in the box provided . If you use Excel or any other software to calculate the test statistic, you must embed the spreadsheet/worksheet into the applications and not as an attachment. Complete the following applications: Part 1: 5 points Part 2: 5 points Part 3: 5 points Part 4: 5 points Part 5: 5 points

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
1 . Hugger Polls contends that an agent conducts a mean of 53 in-depth home surveys every week. A streamlined survey form has been introduced, and Hugger wants to evaluate its effectiveness. The number of in-depth surveys conducted during a week by a random sample of agents are: 53 57 50 55 58 54 60 52 59 62 60 60 51 59 56 At the .05 level of significance, can we conclude that the mean number of interviews conducted by the agents is more than 53 per week? Use a standard deviation of 3.7378. If you use Excel, embed the spreadsheet/worksheet into this exercise. a. Set up the null hypothesis and alternative hypothesis. H 0 : µ < 53 H 1 : µ > 53 b. State the decision rule. Reject H 0 if t > 1.761 ( df = 14) c. Show calculations for the test statistic. X = 846/15 = 56.4 / 56.4 53 3.7378/ 15 3.4 0.96509581 3.522 X t s n t t t μ - = - = = = Xbar- X 3.4 S/N 0.965096 t value 3.522966 HoMean 53 SaMean 56.4 n 15 StdDev 3.7378 Alpha 0.05 Calculated Value 2
df 14 t 3.522966 Test for Left-Tail

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.