Question

Two samples are taken with the following sample means, sizes, and standard deviations ¯ x 1...

Two samples are taken with the following sample means, sizes, and standard deviations ¯ x 1 = 36 ¯ x 2 = 24 n 1 = 46 n 2 = 74 s 1 = 4 s 2 = 2 Estimate the difference in population means using a 89% confidence level. Use a calculator, and do NOT pool the sample variances. Round answers to the nearest hundredth.

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
Two samples are taken with the following sample means, sizes, and standard deviations x 1 =...
Two samples are taken with the following sample means, sizes, and standard deviations x 1 = 36 x 2 = 23 n 1 = 61 n 2 = 68 s 1 = 2 s 2 = 5 Estimate the difference in population means using a 91% confidence level. Use a calculator, and do NOT pool the sample variances. Round answers to the nearest hundredth. _______< μ1-μ2 <________
Two samples are taken with the following sample means, sizes, and standard deviations x¯1 = 30...
Two samples are taken with the following sample means, sizes, and standard deviations x¯1 = 30 x¯2 = 33 n1 = 48 n2 = 45 s1 = 4 s2 = 3 Estimate the difference in population means using a 88% confidence level. Use a calculator, and do NOT pool the sample variances. Round answers to the nearest hundredth. _____< μ1−μ2 < ______
Two samples are taken with the following sample means, sizes, and standard deviations. x¯1=24, x¯2=40 s1=2,...
Two samples are taken with the following sample means, sizes, and standard deviations. x¯1=24, x¯2=40 s1=2, s2=5 n1=65 , n2=50 Estimate the difference in population means using a 99% confidence level. **Click Assume unequal variances!** Round answers to the nearest hundredth. < μ1−μ2 <
Two samples are taken with the following sample means, sizes, and standard deviations ¯x1 = 21...
Two samples are taken with the following sample means, sizes, and standard deviations ¯x1 = 21 ¯x2 = 29 n1 = 58 n2 = 56 s1 = 4 s2 = 3 Find a 87% confidence interval, round answers to the nearest hundredth. < μ1-μ2 <
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 =
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=45,n2=40,x¯1=50.7,x¯2=71.9,s1=5.4s2=10.6 n 1 =45, x ¯ 1 =50.7, s 1 =5.4 n 2 =40, x ¯ 2 =71.9, s 2 =10.6 Find a 92.5% confidence interval for the difference μ1−μ2 μ 1 − μ 2 of the means, assuming equal population variances.
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.
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 =
Independent random samples were selected from two quantitative populations, with sample sizes, means, and standard deviations...
Independent random samples were selected from two quantitative populations, with sample sizes, means, and standard deviations given below. n1 = n2 = 80, x1 = 125.3, x2 = 123.6, s1 = 5.7, s2 = 6.7 Construct a 95% confidence interval for the difference in the population means (μ1 − μ2). (Round your answers to two decimal places.) Find a point estimate for the difference in the population means. Calculate the margin of error. (Round your answer to two decimal places.)
Consider the following results for independent random samples taken from two populations. Sample 1 Sample 2...
Consider the following results for independent random samples taken from two populations. Sample 1 Sample 2 n 1 = 20 n 2 = 40 x 1 = 22.1 x 2 = 20.9 s 1 = 2.4 s 2 = 4.7 What is the point estimate of the difference between the two population means (to 1 decimal)? What is the degrees of freedom for the t distribution (round down your answer to nearest whole number)? At 95% confidence, what is the...