A newsgroup is interested in constructing a 99% confidence interval for the proportion of all Americans who are in favor of a new Green initiative. Of the 663 randomly selected Americans surveyed, 306 were in favor of the initiative. Note on rounding: For parts (A) and (B), round all numerical answers to three decimal places, as needed. For part (C) a whole number answer is expected for each numerical value. A. What is the critical value for this confidence interval? B. (Fill in the blanks) With a 99% confidence, the proportion of all Americans who favor the Green initiative is between and C. (Fill in the blanks) If many groups of 663 randomly selected Americans were surveyed, then a different confidence interval would be produced from each percent of these group. About confidence intervals will contain the true population proportion of Americans who favor the Green initiative and about percent will not contain the tru population proportion.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 3E
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Question
A newsgroup is interested in constructing a 99%
confidence interval for the proportion of all Americans
who are in favor of a new Green initiative. Of the 663
randomly selected Americans surveyed, 306 were in
favor of the initiative.
Note on rounding: For parts (A) and (B), round all
numerical answers to three decimal places, as needed. For
part (C) a whole number answer is expected for each
numerical value.
A. What is the critical value for this confidence
interval?
B. (Fill in the blanks) With a 99% confidence, the
proportion of all Americans who favor the Green
initiative is between
and
C. (Fill in the blanks) If many groups of 663 randomly
selected Americans were surveyed, then a different
confidence interval would be produced from each
percent of these
group. About
confidence intervals will contain the true population
proportion of Americans who favor the Green
initiative and about
percent will
not contain the tru population proportion.
Cr
C
T Value
Chi-Squ
R Value
Signific
(0 to 0.
0.3
Degrees
45
Calcu
How d
value
work?
• Enter S
The Inp
. Put the
In The
• Hit The
Find T
• Use Th
calcula
Other
1. Coeff
Transcribed Image Text:A newsgroup is interested in constructing a 99% confidence interval for the proportion of all Americans who are in favor of a new Green initiative. Of the 663 randomly selected Americans surveyed, 306 were in favor of the initiative. Note on rounding: For parts (A) and (B), round all numerical answers to three decimal places, as needed. For part (C) a whole number answer is expected for each numerical value. A. What is the critical value for this confidence interval? B. (Fill in the blanks) With a 99% confidence, the proportion of all Americans who favor the Green initiative is between and C. (Fill in the blanks) If many groups of 663 randomly selected Americans were surveyed, then a different confidence interval would be produced from each percent of these group. About confidence intervals will contain the true population proportion of Americans who favor the Green initiative and about percent will not contain the tru population proportion. Cr C T Value Chi-Squ R Value Signific (0 to 0. 0.3 Degrees 45 Calcu How d value work? • Enter S The Inp . Put the In The • Hit The Find T • Use Th calcula Other 1. Coeff
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