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

Explore all topics

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.

(Essay)

4.9/5

(40)

Question 21

What is effect size?

(Essay)

4.9/5

(38)

Question 22

The level of significance is determined by which of the following?

(Multiple Choice)

4.8/5

(37)

Question 23

If the sample mean is 30,the population average is 10,and the standard error of the mean is 5,what is the observed z value?

(Multiple Choice)

4.7/5

(39)

Question 24

After conducting a one-sample Z-test,you arrived at a value of 5.7 for the z value.What is your conclusion?

(Multiple Choice)

4.8/5

(37)

Question 25

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

(True/False)

4.8/5

(35)

Question 26

If our sample selection was perfect,what would be the difference between the sample and population averages?

(Multiple Choice)

4.9/5

(40)

Question 27

In the effect size formula,what does X bar signify?

(Multiple Choice)

4.9/5

(39)

Question 28

If the population average is 45,the sample mean is 50,and the standard error of the mean is 5,what is the observed z value?

(Multiple Choice)

4.9/5

(34)

Question 29

Calculate the observed z value using a sample mean of 25,a population average of 20,and a standard error of the mean of 8.

(Multiple Choice)

4.8/5

(43)

Question 30

For the Z-test,the population's standard deviation is ______.

(Multiple Choice)

4.8/5

(39)

Question 31

What is the standard error of the mean when you have a population standard deviation of 2 and a sample size of 9?

(Multiple Choice)

4.9/5

(38)

Question 32

An alternative hypothesis in a one-sample Z-test could be represented as follows:

(Multiple Choice)

4.8/5

(32)

Question 33

The numerator of the equation for the z value is ______.

(Multiple Choice)

4.8/5

(35)

Question 34

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.

(Essay)

4.9/5

(42)

Question 35

Calculation of the one-sample Z-test gives you ______.

(Multiple Choice)

4.9/5

(36)

Question 36

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

(True/False)

4.8/5

(40)

Question 37

In z = 2.56,p < 0.05,what is the probability?

(Multiple Choice)

4.7/5

(39)

Question 38

In the statement,z = 1.42,p > 0.05,which of the following interpretations is TRUE?

(Multiple Choice)

4.8/5

(36)

Question 39

If you have a population standard deviation of 18 and a sample size of 36,what is your standard error of the mean?

(Multiple Choice)

4.8/5

(35)

Question 40

Showing 21 - 40 of 78

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.

What is effect size?

The level of significance is determined by which of the following?

If the sample mean is 30,the population average is 10,and the standard error of the mean is 5,what is the observed z value?

After conducting a one-sample Z-test,you arrived at a value of 5.7 for the z value.What is your conclusion?

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

If our sample selection was perfect,what would be the difference between the sample and population averages?

In the effect size formula,what does X bar signify?

If the population average is 45,the sample mean is 50,and the standard error of the mean is 5,what is the observed z value?

Calculate the observed z value using a sample mean of 25,a population average of 20,and a standard error of the mean of 8.

For the Z-test,the population's standard deviation is ______.

What is the standard error of the mean when you have a population standard deviation of 2 and a sample size of 9?

An alternative hypothesis in a one-sample Z-test could be represented as follows:

The numerator of the equation for the z value is ______.

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.

Calculation of the one-sample Z-test gives you ______.

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

In z = 2.56,p < 0.05,what is the probability?

In the statement,z = 1.42,p > 0.05,which of the following interpretations is TRUE?

If you have a population standard deviation of 18 and a sample size of 36,what is your standard error of the mean?

Statistics or Sadistics Its up to You

Means to an End: Computing and Understanding Averages

Understanding Variability: Vive La Différence

A Picture Really Is Worth a Thousand Words

Computing Correlation Coefficients: Ice Cream and Crime

Understanding Reliability and Validity: Just the Truth

Hypotheticals and You: Testing Your Questions

Probability and Why It Counts: Fun With a Bell-Shaped Curve

Significantly Significant: What It Means for You and Me

Teafor Two: Tests Between the Means of Different Groups

Teafor Two Again: Tests Between the Means of Related Groups

Two Groups Too Many Try Analysis of Variance

Two Too Many Factors: Factorial Analysis of Variancea Brief Introduction

Testing Relationships Using the Correlation Coefficients: Cousins or Just Good Friends

Using Linear Regression: Predicting Wholl Win the Super Bowl

Chi-Square and Some Other Nonparametric Tests: What to Do When Youre Not Normal

Some Other Importantstatistical Procedures You Should Know About

An Introduction to Data Mining

Filters