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c) Do you think the donation rate would drop? The test statistic is z= (Round to two decimal places as needed.)

c) Do you think the donation rate would drop? The test statistic is z= (Round to two decimal places as needed.)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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The Paralyzed Veterans of America recently sent letters to a random sample of 100,000 potential donors and received 4781 donations. They've had a contribution rate of 5% in past campaigns, but a staff member worries that the rate is lower now that they've redesigned their letter. Is there evidence that the 4.78% they received is evidence of a real drop in the contribution rate? Complete parts a through c below. Assume the independence assumption is met. a) What are the hypotheses? Which hypotheses below will test the staff member's worries? A. Ho: p=0.0500 HA: P<0.0500 OB. Ho: P 0.0500 HA: P=0.0500 OC. Ho:p>0.0500 HA: P=0.0500 OD. Ho: p<0.0500 HA: P = 0.0500 OE. Ho: p=0.0500 HA: P# 0.0500 OF. Ho: p=0.0500 HA: P>0.0500 b) Are the assumptions and conditions for inference met? Which assumptions and conditions below are met? Select all that apply. A. The independence assumption is met. B. The 10% condition is met. C. The success/failure condition is met. D. The randomization condition is met. c) Do you think the donation rate would drop? The test statistic is z = (Round to two decimal places as needed.) I
Transcribed Image Text:The Paralyzed Veterans of America recently sent letters to a random sample of 100,000 potential donors and received 4781 donations. They've had a contribution rate of 5% in past campaigns, but a staff member worries that the rate is lower now that they've redesigned their letter. Is there evidence that the 4.78% they received is evidence of a real drop in the contribution rate? Complete parts a through c below. Assume the independence assumption is met. a) What are the hypotheses? Which hypotheses below will test the staff member's worries? A. Ho: p=0.0500 HA: P<0.0500 OB. Ho: P 0.0500 HA: P=0.0500 OC. Ho:p>0.0500 HA: P=0.0500 OD. Ho: p<0.0500 HA: P = 0.0500 OE. Ho: p=0.0500 HA: P# 0.0500 OF. Ho: p=0.0500 HA: P>0.0500 b) Are the assumptions and conditions for inference met? Which assumptions and conditions below are met? Select all that apply. A. The independence assumption is met. B. The 10% condition is met. C. The success/failure condition is met. D. The randomization condition is met. c) Do you think the donation rate would drop? The test statistic is z = (Round to two decimal places as needed.) I
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