Question 1

What is effect size?

Accepted Answer

The answer of What is effect size?...

Question 2

Sample size is taken into account when computing effect size.

Accepted Answer

Effect size is a measure of the strength of the relationship between two variables or the magnitude of a phenomenon, independent of sample size. It is calculated based on the data from the sample, but it does not directly incorporate the size of the sample into its computation.

Question 3

According to your text,there are eight steps that you should follow in order to compute and interpret a Z-test statistic manually.

Accepted Answer

The text outlines eight steps that should be followed in order to compute and interpret a Z-test statistic manually.

Question 4

The results of both one-sample Z- and t-test are basically the same when the sample size is greater than 30.

Accepted Answer

When the sample size is greater than 30, the sampling distribution of the mean becomes approximately normal. In this case, both one-sample Z- and t-tests will produce similar results. Therefore, the statement is true.

Question 5

Write out,in words,a research hypothesis for this statement: The Geography Department is interested in finding out if the average GPA of this year's graduating seniors is comparable to the average GPA of graduating seniors over the last 40 years.

Accepted Answer

The answer of Write out,in words,a research hypothesis for this...

Question 6

SPSS does not offer a one-sample t-test.

Accepted Answer

SPSS does offer a one-sample t-test under the "Compare Means" option in the Analyze menu.

Question 7

Effect size is a measure of how different two groups are from one another.

Accepted Answer

Effect size is a quantitative measure of the magnitude of the difference between two groups. It represents the degree of association between two variables or the strength of the treatment effect in experimental or quasi-experimental designs. Effect size is typically reported as a standardized value, such as Cohen's d, which reflects the number of standard deviations by which the means of the groups differ. A larger effect size indicates a greater degree of differentiation, while a smaller effect size suggests a weaker or more ambiguous difference.

Question 8

A large effect size is any value above 0.8.

Accepted Answer

A large effect size is commonly considered to be any value above 0.8.

Question 9

What are the guidelines in using effect size?

Accepted Answer

The answer of What are the guidelines in using effect...

Question 10

Dr.Meow teaches Engineering Science 101 and is interested in finding out whether her students perform better on math tests compared to all of the engineering students in the university.State this as a null hypothesis.

Accepted Answer

The answer of Dr.Meow teaches Engineering Science 101 and is...

Question 11

What is an example in which a one-sample Z test would be appropriate?

Accepted Answer

The answer of What is an example in which a...

Question 12

If you're comparing the test scores between two classrooms,you should use a one-sample Z-test.

Accepted Answer

When comparing the test scores between two classrooms, you should use a two-sample Z-test (if the population variance is known) or a two-sample t-test (if the population variance is unknown), not a one-sample Z-test, which is used to compare a single sample to a population.

Question 13

Mr.Moo would like to find out if his daisies grow at a faster average rate than the average rate of daisy growth in his neighborhood.State this as a null hypothesis.

Accepted Answer

The answer of Mr.Moo would like to find out if...

Question 14

Write the formula of a directional or nondirectional research hypothesis for the following research problem: The Geography Department is interested in finding out if the average GPA of this year's graduating seniors is comparable to the average GPA of graduating seniors over the last 40 years.

Accepted Answer

The answer of Write the formula of a directional or...

Question 15

SPSS does not offer a one-sample Z-test.

Accepted Answer

SPSS does not have a direct option for conducting a one-sample Z-test; instead, it offers procedures for t-tests which are commonly used for similar purposes when the sample size is small or the population standard deviation is unknown.

Question 16

Dr.Meow teaches Engineering Science 101 and is interested in finding out whether her students perform better on math tests compared to all of the engineering students in the university.State this as a research hypothesis.

Accepted Answer

The answer of Dr.Meow teaches Engineering Science 101 and is...

Question 17

Mr.Moo would like to find out if his daisies grow at a faster average rate than the average rate of daisy growth in his neighborhood.State this as a research hypothesis.

Accepted Answer

The answer of Mr.Moo would like to find out if...

Question 18

According to your text,there are five steps that you should follow in order to compute and interpret a Z-test statistic manually.

Accepted Answer

The number of steps to compute and interpret a Z-test statistic manually can vary depending on the specific procedure or educational resource, but generally, it involves identifying the null and alternative hypotheses, calculating the test statistic using the sample data, and determining the significance of the result. There isn't a universally fixed number of steps like exactly five.

Quiz 10: Only the Lonely: the One Sample Z-Test

What is effect size?

Sample size is taken into account when computing effect size.

According to your text,there are eight steps that you should follow in order to compute and interpret a Z-test statistic manually.

The results of both one-sample Z- and t-test are basically the same when the sample size is greater than 30.

Write out,in words,a research hypothesis for this statement: The Geography Department is interested in finding out if the average GPA of this year's graduating seniors is comparable to the average GPA of graduating seniors over the last 40 years.

SPSS does not offer a one-sample t-test.

Effect size is a measure of how different two groups are from one another.

A large effect size is any value above 0.8.

What are the guidelines in using effect size?

Dr.Meow teaches Engineering Science 101 and is interested in finding out whether her students perform better on math tests compared to all of the engineering students in the university.State this as a null hypothesis.

What is an example in which a one-sample Z test would be appropriate?

If you're comparing the test scores between two classrooms,you should use a one-sample Z-test.

Mr.Moo would like to find out if his daisies grow at a faster average rate than the average rate of daisy growth in his neighborhood.State this as a null hypothesis.

Write the formula of a directional or nondirectional research hypothesis for the following research problem: The Geography Department is interested in finding out if the average GPA of this year's graduating seniors is comparable to the average GPA of graduating seniors over the last 40 years.

SPSS does not offer a one-sample Z-test.

Dr.Meow teaches Engineering Science 101 and is interested in finding out whether her students perform better on math tests compared to all of the engineering students in the university.State this as a research hypothesis.

Mr.Moo would like to find out if his daisies grow at a faster average rate than the average rate of daisy growth in his neighborhood.State this as a research hypothesis.

According to your text,there are five steps that you should follow in order to compute and interpret a Z-test statistic manually.