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=8.35, n1=94, σ2=11.61, n2=84, c=0.98
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
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
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=13.23, n1=62, σ2=16.27, n2=58, α=0.02
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=11.85, n1=79, σ2=15.33, n2=82, α=0.15
Calculate the margin of error of a confidence interval for the difference between two population means using the given information. Round your answer to 3 decimal places. ?1 = 14.11, ?1 = 78, ?2 = 10.84, ?2 = 91, ? = 0.8
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...
Construct the indicated confidence interval for the difference between the two population means. Assume that the two samples are independent simple random samples selected from normally distributed populations. Also assume that the population standard deviations are equal (12) so that the standard error of the difference between means is obtained by pooling the sample variances. A researcher regularly and people who do not exercise regularly, Independent simple random samples were obtained of 16 people who do not exercise regularly and...
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...
Determine the margin of error for a confidence interval to estimate the population mean with n = 35 and ? = 49 for the following confidence levels. a) 91% b) 94% c) 97% a) with a 91% confidence level, the margin of error is (Round to two decimal places as needed.)
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...