Question 1

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

Accepted Answer

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

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

What are the guidelines in using effect size?

Accepted Answer

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

Question 4

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 5

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

Accepted Answer

SPSS offers a one-sample t-test to test whether the mean of a sample is significantly different from a known or hypothesized population mean. A one-sample Z-test can be conducted using other statistical software, such as Excel or R.

Question 6

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...

Question 7

Write the formula of the null 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 the null hypothesis...

Question 8

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 mentions that there are eight steps to follow in order to compute and interpret a Z-test statistic manually.

Question 9

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

Accepted Answer

A one-sample Z-test is used when comparing a sample mean to a known population mean. When comparing test scores between two classrooms, a two-sample t-test would be more appropriate.

Question 10

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 11

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.

Question 12

The results of both one-sample Z- and t-test are basically the same.

Accepted Answer

Both one-sample Z-test and t-test are used to test hypotheses about the population mean when the population standard deviation is known and unknown respectively. Both tests are used to test the significance of the difference between a sample mean and a hypothesized population mean. In situations where the sample size is large (n > 30), the results of both tests are usually similar. However, when the sample size is small (n < 30) and the population standard deviation is unknown, the t-test should be used instead of the Z-test, and the results may differ slightly.

Question 13

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 14

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 15

A large effect size is any value above .5.

Accepted Answer

A large effect size is typically considered to be 0.8 or higher, although some researchers may use 0.5 as a threshold for a medium effect size.

Question 16

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 17

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

Accepted Answer

Effect size is indeed a measure of the magnitude or strength of the difference between two groups, indicating how different they are from each other.

Question 18

What is effect size?

Accepted Answer

The answer of What is effect size?...

Question 19

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