Calculate a confidence interval based on the sample data and interpret this confidence interval.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Calculate a confidence interval based on the sample data and interpret this confidence interval. 

Claim: Women are more likely to wear
SPF reguarly than men.
300
Population
Surveyed 150 men and 150 women
47 men Said they wear Sun Screen
reguarly whereas 103 men Said they don't
wear Sunscrcen reguarly
117 women Said they wear
Sun Sureen said
reguarly whereas 33 Women
they don't wear Sunscreen reguarly
HoiPi-Pz=0
HiiP2-Pz<O(claim)
Significance level =
0.05 %
use the 2
distribution
State the
P-value
z=(P;- Pz) - (P,-P2)
P色+ pe
Transcribed Image Text:Claim: Women are more likely to wear SPF reguarly than men. 300 Population Surveyed 150 men and 150 women 47 men Said they wear Sun Screen reguarly whereas 103 men Said they don't wear Sunscrcen reguarly 117 women Said they wear Sun Sureen said reguarly whereas 33 Women they don't wear Sunscreen reguarly HoiPi-Pz=0 HiiP2-Pz<O(claim) Significance level = 0.05 % use the 2 distribution State the P-value z=(P;- Pz) - (P,-P2) P色+ pe
Expert Solution
Introduction

Confidence interval for two sample proportion is calculated using the sample proportion and sample size as

p^1-p^2±zα×p^11-p^1n1+p^21-p^2n2

where p^=xn

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