What is a 90% confidence interval for p1 p2?
Interpretation: I am 90% confident that the proportion of claims for $50 or more made against Company A is between . 005 and . 065 larger than the proportion made against Company B….CONFIDENCE INTERVAL FOR P1-P2.
Company A | Company B | |
---|---|---|
Number of shipments sampled | 326 | 402 |
Number of claims for $50 or more | 26 | 18 |
How do you calculate the 95% confidence interval for the difference?
Thus, the difference in sample means is 0.1, and the upper end of the confidence interval is 0.1 + 0.1085 = 0.2085 while the lower end is 0.1 – 0.1085 = –0.0085….Sign up for early access to Dummies Drops.
Confidence Level | z*-value |
---|---|
95% | 1.96 |
98% | 2.33 |
99% | 2.58 |
What is the point estimate of p1 p2?
The point estimate for the difference between the two population proportions, p 1 − p 2 , is the difference between the two sample proportions written as p ^ 1 − p ^ 2 .
How do you create a confidence interval?
Find the average by adding all the 1’s and dividing by the number of responses.
How to calculate confidence interval calculator?
Choose 1 Proportion Z Interval. Press Stat and then scroll over to TESTS.
What is the formula for a confidence interval?
x̄ = Sample Mean
How do I interpret a confidence interval?
Gather the sample data.