An experiment to compare the tension bond strength of polymer latex modified mortar (Portland cement mortar to which polymer latex emulsions have been added during mixing) to thatof unmodified mortar resulted in x = 18.18 kgf/cm² for the modified mortar (m = 42) and y = 16.85 kgf/cm² for the unmodified mortar (n = 32). Let μ₁ and ₂ be the true averagetension bond strengths for the modified and unmodified mortars, respectively. Assume that the bond strength distributions are both normal.(a) Assuming that 0₁ = 1.6 and ₂ = 1.3, test Ho: M₁ M₂ = 0 versus Ha: M₁ M₂ > 0 at level 0.01.1Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.)z = 4.74XP-value =State the conclusion in the problem context.Ⓒ Reject Ho. The data suggests that the difference in average tension bond strengths exceeds 0.O Reject Ho. The data does not suggest that the difference in average tension bond strengths exceeds 0.O Fail to reject Ho. The data does not suggest that the difference in average tension bond strengths exceeds from 0.O Fail to reject Ho. The data suggests that the difference in average tension bond strengths exceeds 0.(b) Compute the probability of a type II error for the test of part (a) when μ₁ - M₂ = 1. (Round your answer to four decimal places.)(c) Suppose the investigator decided to use a level 0.05 test and wished ß = 0.10 when μ₁ −μ₂ = 1. If m = 42, what value of n is necessary? (Round your answer up to thenearest whole number.)n =

Let μ1 and μ2 be the true mean tension bond strengths for the modified and unmodified mortars.…

Answered: (a) Assuming that σ₁ = 1.6 and ₂ = 1.3,…

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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9
2a. calculate the value of the linear correlation coefficient R and the critical value of our using alpha= 0.05. show your calculations for r below. include an explanation on how you found the critical value. r: CV of r: 2b. determine whether there is sufficient evidence to support the claim of a linear correlation between the magnitude and the deaths from the earthquakes. explain your answer. 2c. find the regression equation. let the predictor (x) variable be the magnitude. identify the slope and the Y intercept within your regression equation. show your calculations below. Describe how you constructed the regression equation. Slope: Y intercept: 2d. is the equation a good model? explain your answer. 2e. what would be the best predicted depth of an earthquake with a magnitude of 2.6? include the correct units. show your calculations below. explain how you determined your answer.
You are given the following data : 85 А. Мean Standard Deviat. 11 36 8 Correlation coefficient between X and Y=0•66 (i) Find the two regression equations. (ii) Estimate the value of X when Y=75
22. You are given the following value from a t-table as needed: P(t140 > 1.656) = 0.05 Association between student math and verbal scores on the SAT was modeled by a linear regression model using the output given below for sample scores for a graduating class from a high school. Find a 90% prediction interval for the Math score of a graduating student that has a verbal score of 500. Variable Count Mean Verbal 142 596.296 Math 142 612.099 Dependent variable is Math R-square = 46.9% s=71.75 with 142-2=140 df Variable Coefficient SE(Coeff) t-ratio P-value Intercept 209.554 34.35 6.1 <0.0001 Verbal 0.675 0.0568 11.9 <0.0001
Please help me on Part E
17
2. The data below obtained from the experiment: 1.5 1.8 2.4 2.7 3.2 3.6 f(x) | 0.7555 | 0.6206 | 0.5052 0.4812 0.4498 | 0.4337 This data can be fitted to the curve y = where C and D are C + Dx constants. a. Show that the curve above can be written as D+-. b. Hence, by using the least squares linearization process, determine the value of C and D. Start your calculation with S= ΣΥ- Y(X)> i=0 where S is the total squares error. c. Estimate the value of f (2.5) based on the results obtained in part (b).
None
Given are five observations for two variables, and y. Excel File: data14-25.xlsx 8 5 Yi What is the value of the t test statistic (to 2 decimals)? 2 7 The estimated regression equation is û = 7.6 +0.9x. a. What is the value of the standard error of the estimate (to 4 decimals)? b. Test for a significant relationship by using the t test. Use α = 0.05. 6 9 13 20 18 9 26 23 What is the p-value? Use Table 2 of Appendix B. - Select your answer - What is your conclusion (α = 0.05)? - Select your answer - c. Use the F test to test for a significant relationship. Use α = 0.05. Compute the value of the F test statistic (to 2 decimals).
12:40 .ll 5GE O Today 11:48 AM Edit Q LIVE 7th grade math class. just 2 hours. Test Score y Hours Studied r 65 5. 6. 71 7. 78 82 6. 86 10 94 Regression Equation: ŷ 5.543x +37.762 %3D The standard error of estimate Se = 1.13 E(z) = 45 and (=²) = 355 The estimated score will be between A. 48.848 and 51.796 with a margin of error of 2.838 B. 46.010 and 51.686 with a margin of error of 2.838 C. 40.357 and 46.253 with a margin of error of 2.948 D. 45.900 and 48.848 with a margin of error of 2.768 E. 45.900 and 51.796 with a margin of error of 2.948
Given below are the ages and heart rates of 50 patents aho participated in a dinical tral for a new ant-hypertersive drug A a Graphicaly, what can you conclude about the relationship between age and heart rate? B. b. Test the hypothesis that p= 0 against the altemative that p0 at the 0.05 level of significance| Heart Rate (y) 100 76 Patient No. Age Patient No. Age Heart Rate 1 48 26 39 72 2 45 27 56 70 3 67 70 28 51 76 4 44 72 29 41 68 57 62 64 30 31 32 49 76 70 79 92 72 70 76 53 58 60 62 33 67 76 47 34 54 68 37 76 86 10 84 35 49 11 52 90 36 54 12 66 90 37 44 81 13 33 80 38 69 72 14 30 68 39 45 80 15 41 72 40 39 80 16 52 74 41 37 72 17 40 30 76 42 45 52 86 18 88 43 72 19 35 84 44 44 76 20 49 70 45 28 39 76 21 62 51 72 68 46 74 68 22 47 49 72 23 41 76 48 80 24 55 70 49 52 80 25 63 68 s0 27 82
18% of all college students volunteer their time. Is the percentage of college students who are volunteers smaller for students receiving financial aid? Of the 392 randomly selected students who receive financial aid, 55 of them volunteered their time. What can be concluded at the αα = 0.01 level of significance? H0: H1: The test statistic ? t z = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is ? > ≤ α

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