7 Caselet 3:Calculate the centraltendency and QuartileDeviation of the followingdistribution and interpret theresultsAbove Above Above Above Above6002004008001000Freq 706145227

We want to find the central value and Quartile deviation

Answered: Caselet 3: Calculate the central…

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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Test the hypothesis that the average weekly allowance of female and male ACC 215 students the same, at 5%l evel of significance. Weekly Allowance of Students (Php) Male: 1500 2000 2500 2500 2000 1750 2000 1800 Female:1500 2000 1750 1500 2000 2500 3000 3500 Ho: Ha: α = Decision Rule: Computation: Decision: Conclusion:
Test the hypothesis that the average weekly allowance of female and male ACC 215 students the same, at 5%l evel of significance. (Step by step solution, manually, without using excel) Weekly Allowance of Students (Php) Male: 1500 2000 2500 2500 2000 1750 2000 1800 Female:1500 2000 1750 1500 2000 2500 3000 3500 Ho: Ha: α = Decision Rule: Computation: Decision: Conclusion:
A researcher is using a two-tailed hypothesis test with α = 0.05 to evaluate the effect of a treatment. If the boundaries for the critical region are t = ± 2.080, then how many individuals are in the sample?
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ONLY THE LAST ONE Consider the accompanying data on flexural strength (MPa) for concrete beams of a certain type. 5.9 7.2 7.3 6.3 8.1 6.8 7.0 7.5 6.8 6.5 7.0 6.3 7.9 9.0 8.4 8.7 7.8 9.7 7.4 7.7 9.7 8.2 7.7 11.6 11.3 11.8 10.7 The data below give accompanying strength observations for cylinders. 6.5 5.8 7.8 7.1 7.2 9.2 6.6 8.3 7.0 8.3 7.8 8.1 7.4 8.5 8.9 9.8 9.7 14.1 12.6 11.9 Prior to obtaining data, denote the beam strengths by X1, . . . , Xm and the cylinder strengths by Y1, . . . , Yn. Suppose that the Xi's constitute a random sample from a distribution with mean μ1 and standard deviation σ1 and that the Yi's form a random sample (independent of the Xi's) from another distribution with mean μ2 and standard deviation σ2. (a) Use rules of expected value to show that X − Y is an unbiased estimator of μ1 − μ2. E(X − Y) = E(X) − E(Y) = μ1 − μ2 E(X − Y) = E(X) − E(Y) 2 = μ1 − μ2 E(X − Y) = nm E(X) − E(Y) = μ1 − μ2 E(X −…
Test the hypothesis that the average weekly allowance of female and male ACC 215 students the same, at 5% level of significance. Weekly Allowance of Students (Php) Male: 1500 2000 2500 2500 2000 1750 2000 1800 Female:1500 2000 1750 1500 2000 2500 3000 3500 Ho: Ha: α = Decision Rule: Computation: Decision: Conclusion:
Suppose that in a combined statistics class of 450 students a lecture manages to measure the weights of 75 students who registered for STA 132 and 65 students who registered for STA 122. Let X be the weight variable of Sta121 students so that the average weight is 49 and summation of square of students weights is 586884. Moreover let y be the weight varible of Sta 122 student sothat the avverage weight is 60, and the summation of the square of student weight is 595884. Assume that the sample were selected from two population that are normally distributed with unequel standard deviation. 1. Dertemine the point estimate of the difference between the two unknown population mean weights. 2 construct a 97 % confidence interval of the difference between the two unknown population weights. 3. Test at 3 % confidence level if the two unknown population mean weights are different.
a. Assuming for the moment that all coefficients are significant, please interpret the coefficients of the four independent variables in the BIG b. To determine which of the two models above is statistically superior at the .10 level, please calculate the appropriate F‐statistic.

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Caselet 3: Calculate the central tendency and Quartile Deviation of the following distribution and interpret the results Above Above Above Above Above 600 200 400 800 1000 Freq 70 61 45 22 7