Find the lower bound of the confidence interval, rounding the result to four decimal places. p(1 – p) p- E = P - z n 0.57(1 – 0.57) = 0.57 - 1.960 1,007 Find the upper bound of the confidence interval, rounding the result to four decimal places. P(1 – p) p+ E = P + Za/2/ n 0.57(1 – 0.57) 1,007 = 0.57 + 1.960 Therefore, a 95% confidence interval for the population proportion of adults who lack confidence they will be able to afford health insurance in the future is from a lower bound of X to an upper bound of X .

ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN:9780190931919
Author:NEWNAN
Publisher:NEWNAN
Chapter1: Making Economics Decisions
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Find the lower bound of the confidence interval, rounding the result to four decimal places.
Р(1 — р)
p - E = P – Z«j2\
%3D
0.57(1 – 0.57)
= 0.57
1.960
1,007
Find the upper bound of the confidence interval, rounding the result to four decimal places.
P(1 — р)
p + E :
p + z
0.57(1 – 0.57)
= 0.57 + 1.960
1,007
Therefore, a 95% confidence interval for the population proportion of adults who lack confidence they will be able to afford health insurance in the future is from a
lower bound of
X to an upper bound of
Transcribed Image Text:Find the lower bound of the confidence interval, rounding the result to four decimal places. Р(1 — р) p - E = P – Z«j2\ %3D 0.57(1 – 0.57) = 0.57 1.960 1,007 Find the upper bound of the confidence interval, rounding the result to four decimal places. P(1 — р) p + E : p + z 0.57(1 – 0.57) = 0.57 + 1.960 1,007 Therefore, a 95% confidence interval for the population proportion of adults who lack confidence they will be able to afford health insurance in the future is from a lower bound of X to an upper bound of
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