Consider the following results for independent samples taken from two population
ID: 3228154 • Letter: C
Question
Consider the following results for independent samples taken from two populations.
Sample 1 Sample 2
n1= 500 n2= 300
p1= 0.41 p2= 0.31
A. What is the point estimate of the difference between the two population proportions (to 2 decimals)?
B) Develop a 90% confidence interval for the difference between the two population proportions (to 4 decimals).
_______ to ____________
c. Develop a 95% confidence interval for the difference between the two population proportions (to 4 decimals).
__________ to __________
Explanation / Answer
A) Point estimate of the difference = p1 - p2 = 0.41 - 0.31 = 0.10
B) From statistical software output,
90% confidence interval:
0.0431 to 0.1569
C) From statistical software output,
95% confidence interval:
0.0322 to 0.1678