The Paralyzed Veterans of America recently sent letters to a random sample of 100,000 potential donors and re- 4781 donations. They've had a contribution rate of 4.81% in past campaigns, but a staff member worries that the lower now that they've redesigned their letter. Is there evidence that the 4.78% they received is evidence of a rea in the contribution rate? Complete parts a through c below. Assume the independence assumption is met. OF. Ho: p>0.0481 HA: P = 0.0481 b) Are the assumptions and conditions for inference met? Which assumptions and conditions below are met? Select all that apply. A. The success/failure condition is met. B. The independence assumption is met. C. The 10% condition is met. D, The randomization condition is met. c) Do you think the donation rate would drop? The test statistic is z= -0.43. (Round to two decimal places as needed.) .... The P-value is (Round to three decimal places as needed.)

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Author:Amos Gilat
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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 4.81% 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.
OF. Ho:p>0.0481
HA: P = 0.0481
b) Are the assumptions and conditions for inference met?
Which assumptions and conditions below are met? Select all that apply.
A. The success/failure condition is met.
B. The independence assumption is met.
C. The 10% condition is met.
D, The randomization condition is met.
c) Do you think the donation rate would drop?
The test statistic is z= -0.43.
(Round to two decimal places as needed.)
The P-value is
(Round to three decimal places as needed.)
#
...
||
S
II.
(0,8)
More
X
14
18
12
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 4.81% 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. OF. Ho:p>0.0481 HA: P = 0.0481 b) Are the assumptions and conditions for inference met? Which assumptions and conditions below are met? Select all that apply. A. The success/failure condition is met. B. The independence assumption is met. C. The 10% condition is met. D, The randomization condition is met. c) Do you think the donation rate would drop? The test statistic is z= -0.43. (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.) # ... || S II. (0,8) More X 14 18 12
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