Question

A sample of 200 teenagers shows that 50 believe that war is inevitable, and a sample of 300 people over age 60 shows that 93 believe war is inevitable. Find the 97% condence interval for the difference of the two proportions.

A.-0.148< p₁ − p₂ <0.028

B.-0.153< p₁ − p₂ <0.024

C.-0.113< p₁ − p₂ <0.041

D.-0.167< p₁ − p₂ <0.032

Answer 1

The statistical software output for this problem is :

The 97% confidence interval for the difference of the two proportions is :

A.-0.148< p₁ − p₂ <0.028