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Assume that you have a sample of n1 9, with the sample mean X1 = 50,...
Assume that you have a sample of ny = 9, with the sample mean X7 =...
Assume that you have a sample of ny = 9, with the sample mean X7 = 41, and a sample standard deviation of S, = 7, and you have an independent sample of n2 = 13 from another population with a sample mean of X2 = 32, and the sample standard deviation S2 = 8. Construct a 90% confidence interval estimate of the population mean difference between Ny and My. Assume that the two population variances are equal. -H2O (Round...
Assume that you have a sample of n1=8, with the sample mean Upper X overbar X1=46,...
Assume that you have a sample of n1=8, with the sample mean Upper X overbar X1=46, and a sample standard deviation of Upper S1=6, and you have an independent sample of n2=14 from another population with a sample mean of Upper X2=34 and the sample standard deviation Upper S2=5. In finding the critical value t Subscript alpha divided by tα/2, how many degrees of freedom are there?
Assume that you have a sample of n1=7?, with the sample mean X1=42?, and a sample...
Assume that you have a sample of n1=7?, with the sample mean X1=42?, and a sample standard deviation of S1=4,and you have an independent sample of n2=13 from another population with a sample mean of X2=33 and the sample standard deviation S2=6. a. What is the value of the? pooled-variance tSTAT test statistic for testing H0: ?1=?2?? A local college newsletter reported that the average American college student spends one hour? (60 minutes) on a social media website daily. But...
10.1.4-T Question Help Assume that you have a sample of n, = 9, with the sample...
10.1.4-T Question Help Assume that you have a sample of n, = 9, with the sample mean X, = 42, and a sample standard deviation of S, = 7, and you have an independent sample of n = 13 from another population with a sample mean of X, = 37, and the sample standard deviation Sy = 8. Construct a 99% confidence interval estimate of the population mean difference between 11 and 12. Assume that the two population variances are...
Assume that you have a sample of n 1 equals 9, with the sample mean Upper...
Assume that you have a sample of n 1 equals 9, with the sample mean Upper X overbar 1 equals 43, and a sample standard deviation of Upper S 1 equals 6, and you have an independent sample of n 2 equals 12 from another population with a sample mean of Upper X overbar 2 equals 35, and the sample standard deviation Upper S 2 equals 7. Construct a 95% confidence interval estimate of the population mean difference between mu...
2. Assume that you have a sample of n = 8 with the sample mean X1...
2. Assume that you have a sample of n = 8 with the sample mean X1 = 42 and a sample standard deviation Si = 4, and you have an independent sample of n2 = 15 from another population with a sample mean of X2 = 34 and a sample standard deviation S2 = 5. a. What is the value of the pooled-variance tsTAT test statistic for testing Ho H1 = H2? b. In finding the critical value, how many...
are my answers correct? Consider the following data from two independent samples with equal population variances....
are my answers
correct?
Consider the following data from two independent samples with equal population variances. Construct a 99% confidence interval to estimate the difference in population means. Assume the population variances are equal and that the populations are normally distributed x1 = 67.9 s1 = 12.8 n1 = 10 X2 74.8 s2 = 8.1 n2 = 14 Click here to see the t-distribution table, page 1 Click here to see the t-distribution table,_page 2 The 99% confidence interval is...
Assume that you have a sample of n = 6, with the sample mean X, =...
Assume that you have a sample of n = 6, with the sample mean X, = 46, and a sample standard deviation of S7 = 4, and you have an independent sample of n2 = 7 from another population with a sample mean of X2 = 35 and the sample standard deviation S2 = 5. Assuming the population variances are equal, at the 0.01 level of significance, is there evidence that Hy >H2? Determine the hypotheses. Choose the correct answer...
You have a sample of n1 = 8 with the sample mean ??1 = 42 and...
You have a sample of n1 = 8 with the sample mean ??1 = 42 and a sample standard deviation, S = 4, and you have an independent sample of n2 15 from another population with a sample mean of ??2 = 34 and a sample standard deviation of S2 = 5. State the decision rule.
Two samples are taken with the following sample means, sizes, and standard deviations ¯x1 = 25...
Two samples are taken with the following sample means, sizes, and standard deviations ¯x1 = 25 ¯x2 = 23 n1 = 54 n2 = 73 s1 = 5 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.
Assume that you have a sample of ny = 9, with the sample mean X7 = 41, and a sample standard deviation of S, = 7, and you have an independent sample of n2 = 13 from another population with a sample mean of X2 = 32, and the sample standard deviation S2 = 8. Construct a 90% confidence interval estimate of the population mean difference between Ny and My. Assume that the two population variances are equal. -H2O (Round...
10.1.4-T Question Help Assume that you have a sample of n, = 9, with the sample mean X, = 42, and a sample standard deviation of S, = 7, and you have an independent sample of n = 13 from another population with a sample mean of X, = 37, and the sample standard deviation Sy = 8. Construct a 99% confidence interval estimate of the population mean difference between 11 and 12. Assume that the two population variances are...
2. Assume that you have a sample of n = 8 with the sample mean X1 = 42 and a sample standard deviation Si = 4, and you have an independent sample of n2 = 15 from another population with a sample mean of X2 = 34 and a sample standard deviation S2 = 5. a. What is the value of the pooled-variance tsTAT test statistic for testing Ho H1 = H2? b. In finding the critical value, how many...
are my answers
correct?
Consider the following data from two independent samples with equal population variances. Construct a 99% confidence interval to estimate the difference in population means. Assume the population variances are equal and that the populations are normally distributed x1 = 67.9 s1 = 12.8 n1 = 10 X2 74.8 s2 = 8.1 n2 = 14 Click here to see the t-distribution table, page 1 Click here to see the t-distribution table,_page 2 The 99% confidence interval is...
Assume that you have a sample of n = 6, with the sample mean X, = 46, and a sample standard deviation of S7 = 4, and you have an independent sample of n2 = 7 from another population with a sample mean of X2 = 35 and the sample standard deviation S2 = 5. Assuming the population variances are equal, at the 0.01 level of significance, is there evidence that Hy >H2? Determine the hypotheses. Choose the correct answer...
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