Independent random samples selected from two normal populations produced the sample means and standard deviations shown...
9.2.12-T Independent random samples selected from two normal populations produced the sample moans and standard deviations shown to the right. a. Assuming equal variances, conduct the test Ho: (4-1) = 0 against H: (1 ) using a = 0.05. b. Find and interpret the 95% confidence interval for (1-2) Sample 1 Sample 2 ng = 1802-11 Xy = 5.1 X2 = 7.9 -3.2 Sy = 4.9 a. Find the test statistic The test statistics - 1.87. (Round to two decimal...
Independent random samples selected from two normal populations produced the sample means and standard dev atons shown to the right. a. Assuming equal variances, conduct the test Ho: (μι-μ2)-U against Ha: μι-μ2) #0 using α .10. b. Find and interpret the 90% confidence interval for(μ1-μ2) Sample 1 Sample 2 x1 59 x2-7.9 13 2-4.8 a. Find the trst statistic. The test statistic is Round to two decimal places as needed.) ind the p vaue. The p-value is Round to three...
Independent random samples selected from two normal populations produced the sample means and standard deviations shown to the right. a. Assuming equal variances, conduct the test Ho ??-?2):0 against Ha : (??-?2)#0 using ?:010. b. Find and interpret the 90% confidence interval for ( 1- 2)- Sample 1 Sample 2 n1 18 n2 13 x1-5.2 x27.7 s1 3.7 s2 4.3 a. Find the test statistic. The test statistic is (Round to two decimal places as needed.)
Sample 1 Sample 2 n1 = 15 n2 = 13 x1 =54 x2 = s1 =39 77 s2=46 Independent random samples selected from two normal populations produced the sample means and standard deviations shown to the right a. Assuming equal vanances, conduct the test Ho (μι-μ2) 0 against H. (m-H2)" 0 using α 0 05 b. Find and interpret the 95% confidence interval for (P:- a. Find the test statistic The test statistic is Round to two decimal places as...
Independent random samples were selected from two quantitative populations, with sample sizes, means, and variances given below. Sample Size Sample Mean Sample Variance Population 1 2 34 45 9.8 7.5 10.83 16.49 State the null and alternative hypotheses used to test for a difference in the two population means. O Ho: (41 - H2) = 0 versus Ha: (41 - M2) > 0 Ho: (41 – 12) # O versus Ha: (H1 - H2) = 0 HO: (41 – My)...
Independent random samples were selected from each of two normally distributed populations, n = 6 from population 1 and n2 = 5 from population 2. The data are shown in the table to the right. Complete parts a through c below. 4.7 4.6 1.6 2.3 1.2 3.8 0.6 3.9 C. Test Ho: 02202 against He:0; >o. Use a = 0.01. Determine the test statistic. F= (Round to two decimal places as needed.) Find the p-value. p= (Round to three decimal...
Independent random samples selected from two normal populations produced the sample means and standard deviations shown to the right. a) Assuming equal variances, conduct the test Ho: (u1-u2)=0 against Ha: (u1-u2)=/=0 using a=0.05 b) Find and interpret the 95% confidence interval for (u1-u2) Sample1: n1=17, x1=5.9, s1=3.8 Sample2: n2=10, x1=7.3, s2=4.8
Sample 2 11 n X Assume that both populations are normally distributed a) Test whether , at the = 0.01 level of significance for the given sample data b) Construct a 50% confidence interval about 4-12 Sample 1 19 5078 21 11.9 Click the icon to view the Student distribution table a) Perform a hypothesis test. Determine the null and alternative hypotheses O A HOM > B. Hy: H2 OB HM, H, H2 + C Họ P = H1 H1...
section 10.3 Provided below are summary statistics for independent simple random samples from two populations. Use the nonpooled t-test and the nonpooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval X = 10,8, +2, ny = 20, X2 = 11,62 = 5, n2 = 20 a. Two-tailed test, 0.01 b. 99% confidence interval a. What are the hypotheses for the t-test? O A. Ho: H=12 Haith Oc. Ho: * HOW 2 B. HeH=2 HHH2...
Independent random samples selected from two normal populations produced the sample means and standard deviations shown below: Sample 1 Sample 2 x̅1 = 5.4 x̅2 = 8.2 s1 = 5.6 s2 = 8.2 n1 = 20 n2 = 18 Conduct the test H0 : μ1 - μ2 = 0 against H1 : μ1 - μ2 ≠ 0 ,then the test statistic is __________.