In the context of chi square, variables are independent if a. they are related b. cause and effect can be proved c. the obtained chi square falls in the critical region d. the score of a case on one variable has no effect on the score of the case on the other variable

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Q: Examlpe 3: From the following table below: find 1. Standard error of estimate 2. coefficient of…

A: Standard error of estimate is given by, => √summation(Xi- X bar)2/ (n-1) Where n is sample size

Q: true or false. if you found X2 = 10 with df= 5 you would fail to reject Ho at the 5% significance…

A: It's true

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Q: Find the z-score if the area to the right of z is .3523 and area to the left of –z is 0.3342.

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Q: What is the measure of Z?

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Q: The area to the right of z-score of 0 is

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A: State the hypotheses.

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A: The null and alternative hypothesis is, H0:μ1-μ2=0 i.e. D=0Ha:μ1-μ2<0 i.e D<0 We have, n=7…

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Q: x+ µ| x-H

A: Which one is the correct choice

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A: Solution:

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A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

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Q: (b) Coefficient of Skewness based on Median 3(X – Median) Coeff. of Sk = %3D

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A: Given  z = -1.27 , μ ≠ 35.4(two tailed),α=0.05

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A: Given that, Degrees of freedom = 4 Level of significance = 0.05

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A: The degrees of freedom are d.f = 10 And the value of test statistic is = 13

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A: Introduction: The two variables considered are X and Y.

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Q: 3. Suppose that E(X) = E(X2) = E(X2) = µ, Var(X) = 7, Var(X2) = 13, and Var(X3) = 20. %3D %3D %3D…

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A: As asked for part 4 , the answer is as follows:

Q: using the z table (table e), find the critical value (or values) for each. a. alpha=0.10, two tailed…

A: a)It is given that level of significance is 0.10 and the test is two tailed.Here,

Correlation

Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.

Linear Correlation

A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related. 

Regression Analysis

Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.