Construct a 95% Confidence Interval For $p _ { 1 } - p _ { 2 }$

question 68

Multiple Choice

Construct a 95% confidence interval for $p _ { 1 } - p _ { 2 }$ Assume the samples are random and independent. Sample statistics: $\mathrm { n } _ { 1 } = 50 , \mathrm { x } _ { 1 } = 35 , \text { and } \mathrm { n } _ { 2 } = 60 , \mathrm { x } _ { 2 } = 40$

• A)(-0.141, 0.208)
• B)(-0.871, 0.872)
• C)(-1.341, 1.781)
• D)(-2.391, 3.112)

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