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highlight the correct answer In Testing Hypothesis, the determination of one tai

ID: 3225373 • Letter: H

Question

highlight the correct answer

In Testing Hypothesis, the determination of one tail versus two tail test is based on:

The sign of the null hypothesis

The claim

The critical values

The sign of the alternative hypothesis

The major difference between Student’s t distribution and Standard Normal Distribution is:

t is not symmetric

Z requires larger degrees of freedom

The mean of t is not zero

The standard deviation of t is not 1

In Testing Hypothesis, we always test:

The claim

The null hypothesis

The alternative hypothesis

The level of significance

In testing hypothesis about the means of two populations, the choice of our test statistics depends on:

If populations standard deviations are known or unknown

If the samples are large or small

If the level of significance is 0.10 or higher

If the standard deviations of the two samples are known

Chi-Square two tail critical values for a certain level of significance are not the same because:

The distribution is symmetric

They are on both sides of the mean

The distribution is not symmetric

The degrees of freedom are not the same

ANOVA process could be used to examine:

One effect

Two effects

Interaction

All of the above

R-square is used to explain :

    If the relation between X & Y is linear

    If X &Y are independent

   If X depends on Y

   If the variation of Y is due to changes in X

Simple Linear Regression is represented by:

A quadratic equation

An equation of line

An exponential equation

A logarithmic equation

Simulating practical situations with mathematical equations is:

Statistical Experiment

Mathematical Model Building

Analysis process

Correlation Matrix

Least Square Estimators method, is used to:

Reduce Correlation

Test Hypothesis

Minimize Estimation Error

Analyze cause-effect situation

Correlation Matrix can be used to:

Substitute Regression

Perform ANOVA

Select Explanatory Variables

Improve Sample Data

A Regression Equation Can be:

Quadratic

Linear

Power

All of the above

A Multiple Linear Regression can be:

Logarithmic

Exponential

Linear

All of the above

A goodness of fit test can be used only to test:

A fit of normal distribution to the data

A fit of Binomial distribution to the data

A fit of continuous distribution to the data

All of the above

Test statistic used for test if independence of two variables is:

F

Chi-Square

Z

t

Explanation / Answer

Answers to all questions below:

In Testing Hypothesis, the determination of one tail versus two tail test is based on:

The sign of the null hypothesis

The claim

The critical values

The sign of the alternative hypothesis

The major difference between Student’s t distribution and Standard Normal Distribution is:

t is not symmetric

Z requires larger degrees of freedom

The mean of t is not zero

The standard deviation of t is not 1

In Testing Hypothesis, we always test:

The claim

The null hypothesis

The alternative hypothesis

The level of significance

In testing hypothesis about the means of two populations, the choice of our test statistics depends on:

If populations standard deviations are known or unknown

If the samples are large or small

If the level of significance is 0.10 or higher

If the standard deviations of the two samples are known

Chi-Square two tail critical values for a certain level of significance are not the same because:

The distribution is symmetric

They are on both sides of the mean

The distribution is not symmetric

The degrees of freedom are not the same

ANOVA process could be used to examine:

One effect

Two effects

Interaction

All of the above

R-square is used to explain :

    If the relation between X & Y is linear

    If X &Y are independent

   If X depends on Y

   If the variation of Y is due to changes in X

Simple Linear Regression is represented by:

A quadratic equation

An equation of line

An exponential equation

A logarithmic equation

Simulating practical situations with mathematical equations is:

Statistical Experiment

Mathematical Model Building

Analysis process

Correlation Matrix

Least Square Estimators method, is used to:

Reduce Correlation

Test Hypothesis

Minimize Estimation Error

Analyze cause-effect situation

Correlation Matrix can be used to:

Substitute Regression

Perform ANOVA

Select Explanatory Variables

Improve Sample Data

A Regression Equation Can be:

Quadratic

Linear

Power

All of the above

A Multiple Linear Regression can be:

Logarithmic

Exponential

Linear

All of the above

A goodness of fit test can be used only to test:

A fit of normal distribution to the data

A fit of Binomial distribution to the data

A fit of continuous distribution to the data

All of the above

Test statistic used for test if independence of two variables is:

F

Chi-Square

Z

t