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

question 78

Multiple Choice

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 \(0.401\)

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