In 2001, the polls found that 81% of American adults believed that there was a conspiracy in the death of President Kennedy. Assume a recent poll asked 1020 American adults if they believe there was a conspiracy in the assassination and it found that 790 believe there was a conspiracy. Does the data show that the proportion of Americans who believe in this conspiracy is now lower? Test at the 4% level.
In 2001, the polls found that 81% of American adults believed that there was a conspiracy in the death of President Kennedy. Assume a recent poll asked 1020 American adults if they believe there was a conspiracy in the assassination and it found that 790 believe there was a conspiracy. Does the data show that the proportion of Americans who believe in this conspiracy is now lower? Test at the 4% level.
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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In 2001, the polls found that 81% of American adults believed that there was a conspiracy in the death of President Kennedy. Assume a recent poll asked 1020 American adults if they believe there was a conspiracy in the assassination and it found that 790 believe there was a conspiracy. Does the data show that the proportion of Americans who believe in this conspiracy is now lower? Test at the 4% level.
![T: TEST STATISTIC
The symbol and value of the random variable on this problem are as follows:
Leave this answer as a fraction.
? ✓ =
The formula set up of the test statistic is as follows.:
(Leave any values that were given as fractions as fractions)
z =
P-p
V
Z =
p(1-P)
n
Final answer for the test statistic from technology.
Round to 2 decimal places:
O: OBTAIN THE P-VALUE
P-value =
√√C
Report to 4 decimal places.
It is possible when rounded that a p-value is 0.0000
M: MAKE A DECISION
(1-
Since the p-value ? ✓
we Select an answer
] » [](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd57b7bd0-b370-4b8a-8394-d17f179298c2%2F219eeb1a-3209-4349-ae4e-f7b57db3752f%2Fzxj70j8_processed.png&w=3840&q=75)
Transcribed Image Text:T: TEST STATISTIC
The symbol and value of the random variable on this problem are as follows:
Leave this answer as a fraction.
? ✓ =
The formula set up of the test statistic is as follows.:
(Leave any values that were given as fractions as fractions)
z =
P-p
V
Z =
p(1-P)
n
Final answer for the test statistic from technology.
Round to 2 decimal places:
O: OBTAIN THE P-VALUE
P-value =
√√C
Report to 4 decimal places.
It is possible when rounded that a p-value is 0.0000
M: MAKE A DECISION
(1-
Since the p-value ? ✓
we Select an answer
] » [
Transcribed Image Text:H: HYPOTHESES
Fill in the correct null and alternative hypotheses:
Ho: ? ✓ ? ♥
HA: ? ? ✓
A: ASSUMPTIONS
Since Select an answer information was collected from each object, what conditions do we need to
check?
Check all that apply.
Oo is known.
np > 10
On(1-p) ≥ 10
o is unknown.
n> 30 or normal population.
N≥ 20n
Check those assumptions:
1. np =
2. n(1
- - p) =
3. N =
which is ? ✓
which is ? ✓
which is ? ✓
If no N is given in the problem, use 1000000
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