Independent random samples were selected from two binomial populations, with sample sizes and the number of...
Independent random samples were selected from two binomial populations, with sample sizes and the number of successes given below. Population 1 2 500 500 120 147 Sample Size Number of Successes Construct a 95% confidence interval for the difference in the population proportions. (Use P, - Pg. Round your answers to four decimal places.) - 1087 to
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 of n = 150 and n = 150 observations were randomly selected from binomial populations 1 and 2, respectively. Sample 1 had 68 successes, and sample 2 had 74 successes. You wish to perform a hypothesis test to determine if there is a difference in the sample proportions P, and py: (a) State the null and alternative hypotheses. O Ho: (P1 - P2) = 0 versus Ha: (P1-P2) < 0 O Ho: (2,-) < versus H: (2,-2)...
Independent random samples of 180 observations were randomly selected from binomial populations 1 and 2, respectively. Sample 1 had 104 successes, and sample 2 had 113 successes. Suppose that, for practical reasons, you know that p1 cannot be larger than p2. Test the appropriate hypothesis using α = 0.10. Given: H0: (p1 − p2) = 0 versus Ha: (p1 − p2) < 0 Solve: Find the test statistic. (Round your answer to two decimal places.) z = ?? Find the...
The numbers of successes and the sample sizes for independent simple random samples from two populations are provided for a two-tailed test and a 95% confidence interval. Complete parts (a) through (d). Xy = 21, n = 60, X2 = 22, n2 = 100, a = 0.05 Click here to view a table of areas under the standard normal curve for negative values of Click here to view a table of areas under the standard normal curve for RoSive values...
(1 point) Independent random samples, each containing 800 observations, were selected from two binomial populations. The samples from populations 1 and 2 produced 581 and 221 successes, respectively. (a) Test Ho : (p1 – P2) = 0 against Ha : (Pi – P2) # 0. Use a = 0.01 test statistic = rejection region |z| > The final conclusion is # 0. A. We can reject the null hypothesis that (p1 – P2) = 0 and accept that (p1 –...
Independent random samples, each containing 90 observations, were selected from two populations. The samples from populations 1 and 2 produced 50 and 42 successes, respectively. Test H0:(p1−p2)=0 against Ha:(p1−p2)≠0. Use α=0.04. (a) The test statistic is (b) The P-value is (c) The final conclusion is A. We can reject the null hypothesis that (p1−p2)=0 and accept that (p1−p2)≠0. B. There is not sufficient evidence to reject the null hypothesis that (p1−p2)=0. side note- no idea how to find a test...
1 point) Independent random samples, each containing 50 observations, were selected from two populations. The samples from populations 1 and 2 produced 34 and 27 successes, respectively. Test H0:(p1−p2)=0H0:(p1−p2)=0 against Ha:(p1−p2)≠0Ha:(p1−p2)≠0. Use α=0.1α=0.1. (a) The test statistic is (b) The P-value is (c) The final conclusion is A. We can reject the null hypothesis that (p1−p2)=0(p1−p2)=0 and accept that (p1−p2)≠0(p1−p2)≠0. B. There is not sufficient evidence to reject the null hypothesis that (p1−p2)=0(p1−p2)=0.
Independent random samples of n1 = 900 and n2 = 780 observations were selected from binomial populations 1 and 2, and x1 = 336 and x2 = 378 successes were observed. (a) Find a 90% confidence interval for the difference (p1 − p2) in the two population proportions. (Round your answers to three decimal places.) What assumptions must you make for the confidence interval to be valid? (Select all that apply.) 1. independent samples 2. random samples 3. n1 +...
(1 point) Independent random samples, each containing 90 observations, were selected from two populations. The samples from populations 1 and 2 produced 37 and 30 successes, respectively. Test H 0 :( p 1 − p 2 )=0 H0:(p1−p2)=0 against H a :( p 1 − p 2 )≠0 Ha:(p1−p2)≠0 . Use α=0.05 α=0.05 . (a) The test statistic is (b) The P-value is (c) The final conclusion is A. We can reject the null hypothesis that ( p 1 −...