Question

if we have independent random samples of size 420 and 510. proportion of success are .38...

if we have independent random samples of size 420 and 510. proportion of success are .38 and .43. Find the 99percent confidence interval for difference in the two population proportion.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Given two independent random samples with the following results: n1 =685, p1=0.5, n2 =510, p2 =0.67....
Given two independent random samples with the following results: n1 =685, p1=0.5, n2 =510, p2 =0.67. Can it be concluded that the proportion found in population 2 exceeds the proportion found in population 1? Find the p-value for the hypothesis test. Make the decision for the hypothesis test.
If random samples of the given size are drawn from a population with the given proportion,...
If random samples of the given size are drawn from a population with the given proportion, find the standard error of the distribution of sample proportions. a) Samples of size 35 from a population with proportion 0.37. b) Samples of size 500 from a population with proportion 0.75.
Two random samples are selected from two independent populations. A summary of the samples sizes, sample...
Two random samples are selected from two independent populations. A summary of the samples sizes, sample means, and sample standard deviations is given below: n1=41, n2=44, x¯1=52.3, x¯2=77.3, s1=6 s2=10.8 Find a 96.5% confidence interval for the difference μ1−μ2 of the means, assuming equal population variances. Confidence Interval =
a) Consider random samples of size 56 drawn from population A with proportion 0.77 and random...
a) Consider random samples of size 56 drawn from population A with proportion 0.77 and random samples of size 78 drawn from population B with proportion 0.67 . Find the standard error of the distribution of differences in sample proportions, p^A-p^B. Round your answer for the standard error to three decimal places. standard error = ___________________ b) Consider random samples of size 470 drawn from population A with proportion 0.55 and random samples of size 210 drawn from population B...
Consider random samples of size 86 drawn from population A with proportion 0.47 and random samples...
Consider random samples of size 86 drawn from population A with proportion 0.47 and random samples of size 64 drawn from population B with proportion 0.19 . Find the standard error of the distribution of differences in sample proportions, p^A-p^B. Round your answer for the standard error to three decimal places.
Two random samples are selected from two independent populations. A summary of the samples sizes, sample...
Two random samples are selected from two independent populations. A summary of the samples sizes, sample means, and sample standard deviations is given below: n1=39,n2=40,x¯1=50.3,x¯2=73.8,s1=6s2=6.1 Find a 98% confidence interval for the difference μ1−μ2 of the population means, assuming equal population variances.
The numbers of successes and the sample sizes for independent simple random samples from two populations...
The numbers of successes and the sample sizes for independent simple random samples from two populations are x 1equals32​, n 1equals40​, x 2equals10​, n 2equals20. a. Use the​ two-proportions plus-four​ z-interval procedure to find an​ 95% confidence interval for the difference between the two populations proportions. b. Compare your result with the result of a​ two-proportion z-interval​ procedure, if finding such a confidence interval is appropriate.
Independent random samples were selected from populations 1 and 2. The sample sizes, means, and variances...
Independent random samples were selected from populations 1 and 2. The sample sizes, means, and variances are as follows.               Population               1 2 Sample Size      30 64 Sample Mean      11.4   6.9 Sample Variance        1.37   4.15 (a) Find a 95% confidence interval for estimating the difference in the population means (μ1 − μ2). (Round your answers to two decimal places.) to  
Two random samples are selected from two independent populations. A summary of the samples sizes, sample...
Two random samples are selected from two independent populations. A summary of the samples sizes, sample means, and sample standard deviations is given below: n1=51,n2=36,x¯1=56.5,x¯2=75.3,s1=5.3s2=10.7n1=51,x¯1=56.5,s1=5.3n2=36,x¯2=75.3,s2=10.7 Find a 97.5% confidence interval for the difference μ1−μ2μ1−μ2 of the means, assuming equal population variances. Confidence Interval =
consider the following results frmo two independent random samples taken from two populations. assume that the...
consider the following results frmo two independent random samples taken from two populations. assume that the variances are NOT equal. Population 1 population 2 sample size 50 50 sample mean 35 30 sample variance 784 100 a) what is the "degrees of freedom" for these data? b) what is the 95% confidence interval difference of the population means?