ses a preliminary estimate of the proportion who smoke of 0.30. (a) How large a sample should be taken to estimate the proportion of smokers in the population with a margin of error of 0.02? Use 95% confidence. (Round your answer up to the nearest integer.) (b) Assume that the study uses your sample size recommendation in part (a) and finds 450 smokers. What is the point estimate of the proportion of smokers in the population? (Round your answer to four decimal places.) (c) What is the 95% confidence interval for the proportion of smokers in the population? (Round your answers to four decimal places.) Need Help? suppose that a study designed to collect new data on smokers and nonsmokers to Read It Master It
ses a preliminary estimate of the proportion who smoke of 0.30. (a) How large a sample should be taken to estimate the proportion of smokers in the population with a margin of error of 0.02? Use 95% confidence. (Round your answer up to the nearest integer.) (b) Assume that the study uses your sample size recommendation in part (a) and finds 450 smokers. What is the point estimate of the proportion of smokers in the population? (Round your answer to four decimal places.) (c) What is the 95% confidence interval for the proportion of smokers in the population? (Round your answers to four decimal places.) Need Help? suppose that a study designed to collect new data on smokers and nonsmokers to Read It Master It
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter4: Writing Linear Equations
Section: Chapter Questions
Problem 14CR
Related questions
Question
Transcribed Image Text:You may need to use the appropriate appendix table or technology to answer this question.
In 2014, the Centers for Disease Control reported the percentage of people 18 years of age and older who smoke. Suppose that a study designed to collect new data on smokers and nonsmokers
uses a preliminary estimate of the proportion who smoke of 0.30.
(a) How large a sample should be taken to estimate the proportion of smokers in the population with a margin of error of 0.02? Use 95% confidence. (Round your answer up to the nearest
integer.)
(b) Assume that the study uses your sample size recommendation in part (a) and finds 450 smokers. What is the point estimate of the proportion of smokers in the population? (Round your
answer to four decimal places.)
(c) What is the 95% confidence interval for the proportion of smokers in the population? (Round your answers to four decimal places.)
Need Help?
esc
1
Q
A
to
Read It
UBO
2
W
S
>
Master It
X
3
E
a
D
$
4
C
3
R
F
%
5
V
11
♫
T
G
Concern
6
A
Y
B
&
7
H
W
U
D
N
* 00
8
J
P
1
国人
9
M
K
O
0
cricut
L
<
P
>
[
?
1
I
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 5 steps with 3 images
Recommended textbooks for you
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill