The following data from a random sample on tensile strengths of liner specimens are reported:NoWithfusionfusion24003027270032003220310026552822251131252999291035552991301029023020290029993400Do the two methods result in different tensile strengths? Test at 0.01 level of significance

There are two independent samples which are No and With. We have to test whether the two methods…

Answered: The following data from a random sample…

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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USE THE TABLE GIVEN To test HO: u=50 versus H1: u less than 50, a random sample size of n=25 is obtained from a population that is known to be normally distributed. If xbar =47.9 and s = 14.1, compute the test statistic. test statistic =-0.745 If the researcher decides to test this hypothesis at the a=0.1 level of significance, determine the critical value(s). Use the table given.
Consider the accompanying data on breaking load (kg/25 mm width) for various fabrics in both an unabraded condition and an abraded condition. Use the paired t test to test H: μ = 0 versus H₂: μ> 0 at significance level 0.01. (Use μ = μ₁-₁₂) Fabric 5 6 8 2 3 4 7 55.0 51.1 38.5 43.2 48.8 25.6 49.9 20.0 46.0 34.0 36.5 52.5 26.5 46.5 = U A P-value= 1 36.5 28.5 Calculate the test statistic and determine the P-value. (Round your test statistic to one decimal place and your P-value three decimal places.) USE SALT State the conclusion in the problem context. O Reject H. The data suggests a significant mean difference in breaking load for the two fabric load conditions. O Fail to reject H. The data does not suggest a significant mean difference in breaking load for the two fabric load conditions. O Fail to reject H. The data suggests a significant mean difference in breaking load for the two fabric load conditions. O Reject H. The data does not suggest a significant mean difference in breaking…
The police chief selects a sample of 50 local police officers from a population of officers with a mean physical fitness rating of 75 ± 8.0 (m ± s) on a 100-point physical endurance rating scale. He measures a sample mean physical fitness rating on this scale equal to 79. He conducts a one–independent sample z test to determine whether physical endurance increased at a .05 level of significance. Compute effect size using Cohen’s d.
5
Suppose that we are testing H0: μ = μ0 versus H1: μ ≠ μ0. Calculate the P-value for the following observed values of the test statistic: (a) Z0 = 1.95 (b) Z0 = -0.10
An investigation was carried out to test the string tension limit of badminton rackets measured in pounds (Ibs) based on three different types of polymer. The results were given in the following table: Polymer type Tension limit 1 8 10 15 9 12 23 17 20 21 30 3 6 16 7 5 Assume that all assumptions to perform an ANOVA test are satisfied. (a) Test the hypothesis that the three polymer types have the same tension limit at a = 0.01. (b) If you were the design engineer and you wished to maximize the tension limit, determine the polymer type that you would select? (c) By using the Fisher's LSD method, determine the significant differences in the polymer types at a = 0.01.
An agent from a property rental company would like to predict the monthly rental for condominium based on the size as defined in square metres. A sample of 25 condominiums was selected. Data is generated and the summary of outputs are shown in Table 1 and Figure 1. ANOVA df SS MS F 59.914 Significance F 7.52E-08 Regression Residual 1 2268776.545 2268777 23 870949.4547 37867.37 Total 24 3139726 Standard Error 161.00427 t Stat P-value Coefficients 177.1208 1.0651 1.100 Intercept Size 0.282 0.13760 7.740 7.52E-08 Table 1 Size Residual Plot 500 400 300 200 100 0 -100 -200 ◆ 1000 -300 -400 -500 Residuals 500 Size Figure 1 +500 2000 2500
In an experiment to compare the tensile strengths of I = 6 different types of copper wire, J = 5 samples of each type vwere used. The between-samples and within-samples estimates of o were computed as MSTT = 2677.3 and MSE = 1131.2, respectively. Use the F test at level 0.05 to test Ho: 41 = 42 = ...= H6 versus H: at least two uj's are unequal. Calculate the test statistic. (Round your answer to two decimal places.) f=
Consider the accompanying data on breaking load (kg/25 mm width) for various fabrics in both an unabraded condition and an abraded condition. Use the paired t test to test Ho: D = 0 versus H₂: μD > 0 at significance level 0.01. (Use HU-HA.) U A 1 36.3 28.5 USE SALT 2 55.0 20.0 3 51.4 46.0 Fabric 8 4 5 38.5 43.2 6 7 48.8 25.6 49.8 34.0 36.0 52.5 26.5 46.5 Calculate the test statistic and determine the P-value. (Round your test statistic to one decimal place and your P-value to three decimal places.) t = P-value = State the conclusion in the problem context. O Fail to reject Ho. The data does not suggest a significant mean difference in breaking load for the two fabric load conditions. O Reject Ho. The data suggests a significant mean difference in breaking load for the two fabric load conditions. O Reject Ho. The data does not suggest a significant mean difference in breaking load for the two fabric load conditions. O Fail to reject Ho. The data suggests a significant mean difference in…
For the population, 57% of people are searched if stopped. For a sample of 26441 stops, what Z-critical value is required for significance at the 5 % level? In a test to determine if Black men are searched more frequently than the rest of the population? (answer to 2 d.p.s)
Interpret the generated results at 5% level of significance.
Determine the following ; Conclusion HYPOTHESIS Calculation

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