Calculate the margin of error of a confidence interval for the difference between two population means using the given information. Round your answer to six decimal places.
σ1=13.94, n1=117, σ2=10.65, n2=137, c=0.9
We have given,
Level of significance =1-0.90=0.1
Z critical value(by using Z table) = 1.645
Calculate the margin of error of a confidence interval for the difference between two population means...
Calculate the margin of error of a confidence interval for the difference between two population means using the given information. Round your answer to six decimal places. σ1=7.94 , n1=62, σ2=11.25, n2=53 , c=0.85
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a) Use the t-distribution to find a confidence interval for a difference in means μ1-μ2 given the relevant sample results. Give the best estimate for μ1-μ2, the margin of error, and the confidence interval. Assume the results come from random samples from populations that are approximately normally distributed. A 90% confidence interval for μ1-μ2 using the sample results x¯1=8.8, s1=2.7, n1=50 and x¯2=13.3, s2=6.0, n2=50 Enter the exact answer for the best estimate and round your answers for the margin...
Construct the indicated confidence interval for the difference between the two population means. Assume that the assumptions and conditions for inference have been met. A researcher wishes to determine whether people with high blood pressure can reduce their blood pressure by following a particular diet. Use the sample data below to construct a 99% confidence interval for μ1-μ2, where H1 and H2 represent the population means for the treatment group and the control group, respectively. Treatment GolGroup n1 85 n2...
Use the t-distribution to find a confidence interval for a difference in means M - U2 given the relevant sample results. Give the best estimate for ui - U2, the margin of error, and the confidence interval. Assume the results come from random samples from populations that are approximately normally distributed. = 30 and X2 = 64.5, A 95% confidence interval for Mi - uz using the sample results īj = 82.3, si = 10.8, n S2 = 6.9, n2...
Step 3 of 4: Calculate the margin of error to be used in
constructing the confidence interval. Round your answer to six
decimal places.
Step 4 of 4: Construct the 98% confidence interval. Round your
answers to one decimal place.
A state legislator wants to determine whether his voters' performance rating (0 - 100) has changed from last year to this year. The following table shows the legislator's performance from the same ten randomly selected voters for last year and...
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