Test the following hypotheses with the data given. Let a = .10.Ho:H1- H2 = 0Ha: H1- H2#0Sample 1Sample 2Х1- 138.7X2 = 142.101 = 6.8102 = 8.62n1 = 48n2 = 39Appendix A Statistical Tables(Round your answer to 2 decimal places, e.g. 15.25.)Observed z =The decision is to

It is given that for sample 1 x¯1=138.7,σ1=6.81,n1=48, and for sample 2 x¯2=142.1,σ2=8.62,n2=39.

Answered: Test the following hypotheses with the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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her. If the candi needed? Because the p-hat is not A E = 0.07 c = 0.90 Solution Given information: Z. = 1.645 At c = 0.90 , n = pq () = 0.5(1 – 0.5) (4) 2 Minimum Sample Size to Estimate p : 0.07 139 (rounded up) Try This 8.3.2 wich to estimate, with 90% confidence, the population proportion of U.S. adults who are onfident in the stability of the U.S. banking system. Your estimate must be accurate within 3% of the nopulation proportion. Find the minimum sample size needed, using a prior study that found that 43% of U.S. adults are confident in the stability of the U.S. banking system. Confidence Interval Summary Mean with Standard Mean with Standard Proportions Deviation o Known Deviation o Unknown Critical Value Zc tc with d.f.=n – 1 E = tc n Margin of Error S E = Zc Jn E = Zc 的一”
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(a) Find the test statistic. (b) Find the standardized test statistic.
Test the claim about the population mean, p, at the given level of significance using the given sample statistics. Claim: u = 30; a = 0.09; o = 3.16. Sample statistics: x = 29.5, n = 66 Identify the null and alternative hypotheses. Choose the correct answer below. O B. H,: H= 30 Ha:u> 30 O A. Ho: H 30 Ha: u= 30 O E. Ho: H= 30 O F. Ho:H=30 Ha: H<30 Hi µ#30 Calculate the standardized test statistic. The standardized test statistic is. (Round to two decimal places as needed.) Determine the critical value(s). Select the correct choice below and fill in the answer box to complete your choice. (Round to two decimal places as needed.) O A. The critical value is. O B. The critical values are t Determine the outcome and conclusion of the test. Choose the correct answer below.
All Test the claim about the population mean, p, at the given level of significance using the given sample statistics. age Claim: u = 50; a=0.02; o= 3.06. Sample statistics: x= 49.8, n 75 Identify the null and alternative hypotheses. Choose the correct answer below. gat O A. H, p 50 O C. H,: H> 50 Ha: u= 50 O D. Ho: H#50 Ha p= 50 OF Ho H=50 Ha:p< 50 E. H, H= 50 H3 u#50 Calculate the standardized test statistic. The standardized test statistic is -0.57. (Round to two decimal places as needed.) Determine the critical value(s). Select the correct choice below and fill in the answer box to complete your choice. (Round to two decimal places as needed.) O A. The critical value is. O B. The critical values are +
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Suppose that you want to perform a hypothesis test for a population mean. Assume that the population standard deviation is unknown and that the sample size is relatively small. In each part, the distribution shape of the variable under consideration is given. Decide whether you would use the t-test, the Wilcoxon signed-rank test, or neither. a. Triangular b. Symmetric bimodal c. Left skewed
Find the standardized test statistic estimate, z, to test the hypothesis that p1 > p2. Use α = 0.01. The sample statistics listed below are from independent samples. Sample statistics: n1 = 100, x1 = 38, and n2 = 140, x2 = 50 a.0.638 b.0.362 c.2.116 d.1.324
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Use technology and a t-test to test the claim about the population mean at the given level of significance a using the given sample statistics. Assume the population is normally distributed Claim: u > 78; a = 0.01 Sample statistics: × = 79.3, s = 3.6, n = 28 What are the null and alternative hypotheses? Choose the correct answer below. O A. Ho: M = 78 H: 4*78 О c. Ha: u₴78 Hai n< 78 OB. H: 4478 H: M=78 O D. H: 4 s78 H: 4>78 What is the value of the standardized test statistic? The standardized test statistic is__ . (Round to two decimal places as needed.) What is the P-value of the test statistic? P-value=__(Round to three decimal places as needed.) Decide whether to reject or fail to reject the null hypothesis. Choose the correct answer below.
Q2. Use the sample data below to test the hypotheses H: P = P2 = P3 H: Not all population proportions are equal where pi is the population proportion of Yes responses for population i. Use a 0.1 level of significance to answer the following questions. Populations Response 1 2 Yes 150 140 100 No 100 140 100 (A). What is the test statistic value? (B). Observing the x table, what is the possible range of values of the p-value? [Multiple choice with single answer] (a) 0.01
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Test the following hypotheses with the data given. Let a = .1O. Ho:H1-H2 = 0 Ha: H1- H2#0 Sample 1 Sample 2 X1= 138.7 X2 = 142.1 01 = 6.81 02 = 8.62 n1 = 48 n2 = 39 (Round your answer to 2 decimal places, e.g. 15.25.) Observed z = The decision is to