The numbers of successes and the sample sizes are given for independent simple random samples from two populations.Use the two-proportions plus-four z-interval procedure to obtain the specified confidence interval.
-$\mathrm { x } _ { 1 } = 27 , \mathrm { n } _ { 1 } = 38 , \mathrm { x } _ { 2 } = 17 , \mathrm { n } _ { 2 } = 38 ; 80 \%$ confidence interval
A)$0.127$ to $0.373$
B) $0.113$ to $0.387$
C) $0.072$ to $0.428$
D) $0.099$ to $0.401$

Question

The numbers of successes and the sample sizes are given for independent simple random samples from two populations.Use the two-proportions plus-four z-interval procedure to obtain the specified confidence interval.
-$\mathrm { x } _ { 1 } = 27 , \mathrm { n } _ { 1 } = 38 , \mathrm { x } _ { 2 } = 17 , \mathrm { n } _ { 2 } = 38 ; 80 \%$ confidence interval  
A)$0.127$ to $0.373$
B) $0.113$ to $0.387$
C) $0.072$ to $0.428$
D) $0.099$ to $0.401$

Quizplus · Accepted Answer

The Answer of The numbers of successes and the sample sizes are given for independent simple random samples from two populations.Use the two-proportions plus-four z-interval procedure to obtain the specified confidence interval.
-$\mathrm { x } _ { 1 } = 27 , \mathrm { n } _ { 1 } = 38 , \mathrm { x } _ { 2 } = 17 , \mathrm { n } _ { 2 } = 38 ; 80 \%$ confidence interval  
A)$0.127$ to $0.373$
B) $0.113$ to $0.387$
C) $0.072$ to $0.428$
D) $0.099$ to $0.401$

The Numbers of Successes and the Sample Sizes Are Given x1=27,n1=38,x2=17,n2=38;80%\mathrm { x } _ { 1 } = 27 , \mathrm { n } _ { 1 } = 38 , \mathrm { x } _ { 2 } = 17 , \mathrm { n } _ { 2 } = 38 ; 80 \%x1​=27,n1​=38,x2​=17,n2​=38;80%

The Numbers of Successes and the Sample Sizes Are Given $\mathrm { x } _ { 1 } = 27 , \mathrm { n } _ { 1 } = 38 , \mathrm { x } _ { 2 } = 17 , \mathrm { n } _ { 2 } = 38 ; 80 \%$