Research Methods for the Behavioral Sciences (MindTap Course List)
5th Edition
ISBN: 9781305104136
Author: Frederick J Gravetter, Lori-Ann B. Forzano
Publisher: Wadsworth Publishing
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 16, Problem 5E
For each of the following, identify the section of a research report that would probably contain the desired information: How many individuals participated in the study and what are their characteristics? Why was the study done?
Did the study use any questionnaires or unusual measurement techniques?
Did the study produce a statistically significant result?
What are the implications of the results and how might they be applied?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Section 10-2 Homework Assignment
Section 10-2 Homework Assignment
Question 4 of 8 (1 point) | Question Attempt: 1 of Unlimited
www-awu.aleks.com
✓ 3
= 4
5
6
8
c
A ALEKS-Mariana Quezada - Section 10-2 Ho
Final grades The data show the final grades for 16 randomly selected students in College Algebra and Statistics. Find the y-value for the specified x-value.
Remember that no regression should be done when r is not significant.
Student
1
2
3
4
5
6
7
8
College Algebra
78
85
81
90
58
70
84
59
Statistics
80
95
62
77
68
75
80
76
Student
9
10
11
12
13
14
15
16
College Algebra
84
74
92
98
70
86
77
65
Statistics
85
57
97
99
72
77
76
72
Send data to Excel
The correlation coefficient for the data is r=0.626and a=0.05 Should regression analysis be done?
The regression analysis should not be done.
The regression analysis should be done.
Find the equation of the regression line. Round the coefficients to at least three decimal places.
y'-a+bx
b=
Find the predicted grade in Statistics when the…
Hours Watching Videos and GPA The data show a random selection of students' GPAs and the number of hours per week
that they spend watching videos. Is there a linear relationship between the two variables?
Student 1 2
3
4
5
6 7 8 9 10 11 12
Hours
GPA
5 6 7
8
9
10
13 15 16 20 22 25
4.0 3.9 3.7 3.6 3.4 3.3 3.2 2.9 2.7 2.4 2.2 2.1
Send data to Excel
Part 1 of 5
(a) Draw the scatter plot for the variables.
Time Watching Videos and GPA
4
3.5-
3-
2.5
1.5-
1+
0.5+
0
10
15
Hours watching videos
35
Part 2 of 5
(b) Compute the value of the correlation coefficient. Round your answer to at least three decimal places.
r-1.003
Part 3 of 5
(c) State the hypotheses.
Hop-o
Hp 0
Part: 3/5
Part 4 of 5
Skip Part
Check
Save For Later
Español
劉
Submit Assignment
2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility
8- Write down the definition of a "pseudo distribution function" and state (without proof) the
Helly's selection theorem.
Chapter 16 Solutions
Research Methods for the Behavioral Sciences (MindTap Course List)
Ch. 16.2 - Describe the basic elements of APA-style writing...Ch. 16.3 - Identify and describe the content of each section...Ch. 16.3 - Write a research report using APA style.Ch. 16.4 - Explain the purpose of a research proposal and how...Ch. 16 - In addition to the key words, you should also be...Ch. 16 - In 1994, Steven Schmidt published a research...Ch. 16 - Describe the elements of an abstract.Ch. 16 - Prob. 4ECh. 16 - For each of the following, identify the section of...Ch. 16 - Prob. 6E
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Similar questions
- a.s. P 3- (a) Show that if Xn →X then Xn →X. (b) Show that if Xn r р →X then Xn- →X.arrow_forwardIn a study on speed control, it was found that the main reasons for regulations were to make traffic flow efficient and to minimize the risk of danger. An area that was focused on in the study was the distance required to completely stop a vehicle at various speeds. Use the following table to answer the questions. MPH Braking distance (yrds) 5 10 10 17 20 27 30 50 40 60 50 100 60 150 70 200 a. Suppose the correlation coefficient (r) is 0.956? Does this suggest a strong relationship? Explain b. What would you conclude about the relationship if r=0? Discuss c. Explain what Does correlation mean causation? D. Is there a relationship between the two variables? And if so, is it positive or negative? Why?arrow_forwardIn a study on speed control, it was found that the main reasons for regulations were to make traffic flow efficient and to minimize the risk of danger. An area that was focused on in the study was the distance required to completely stop a vehicle at various speeds. Use the following table to answer the questions. MPH Braking distance (yrds) 5 10 10 17 20 27 30 50 40 60 50 100 60 150 70 200arrow_forward
- Businessarrow_forward3. Bayesian Inference – Updating Beliefs A medical test for a rare disease has the following characteristics: Sensitivity (true positive rate): 99% Specificity (true negative rate): 98% The disease occurs in 0.5% of the population. A patient receives a positive test result. Questions: a) Define the relevant events and use Bayes’ Theorem to compute the probability that the patient actually has the disease.b) Explain why the result might seem counterintuitive, despite the high sensitivity and specificity.c) Discuss how prior probabilities influence posterior beliefs in Bayesian inference.d) Suppose a second, independent test with the same accuracy is conducted and is also positive. Update the probability that the patient has the disease.arrow_forward4. Linear Regression - Model Assumptions and Interpretation A real estate analyst is studying how house prices (Y) are related to house size in square feet (X). A simple linear regression model is proposed: The analyst fits the model and obtains: • Ŷ50,000+150X YBoB₁X + € • R² = 0.76 • Residuals show a fan-shaped pattern when plotted against fitted values. Questions: a) Interpret the slope coefficient in context. b) Explain what the R² value tells us about the model's performance. c) Based on the residual pattern, what regression assumption is likely violated? What might be the consequence? d) Suggest at least two remedies to improve the model, based on the residual analysis.arrow_forward
- 5. Probability Distributions – Continuous Random Variables A factory machine produces metal rods whose lengths (in cm) follow a continuous uniform distribution on the interval [98, 102]. Questions: a) Define the probability density function (PDF) of the rod length.b) Calculate the probability that a randomly selected rod is shorter than 99 cm.c) Determine the expected value and variance of rod lengths.d) If a sample of 25 rods is selected, what is the probability that their average length is between 99.5 cm and 100.5 cm? Justify your answer using the appropriate distribution.arrow_forward2. Hypothesis Testing - Two Sample Means A nutritionist is investigating the effect of two different diet programs, A and B, on weight loss. Two independent samples of adults were randomly assigned to each diet for 12 weeks. The weight losses (in kg) are normally distributed. Sample A: n = 35, 4.8, s = 1.2 Sample B: n=40, 4.3, 8 = 1.0 Questions: a) State the null and alternative hypotheses to test whether there is a significant difference in mean weight loss between the two diet programs. b) Perform a hypothesis test at the 5% significance level and interpret the result. c) Compute a 95% confidence interval for the difference in means and interpret it. d) Discuss assumptions of this test and explain how violations of these assumptions could impact the results.arrow_forward1. Sampling Distribution and the Central Limit Theorem A company produces batteries with a mean lifetime of 300 hours and a standard deviation of 50 hours. The lifetimes are not normally distributed—they are right-skewed due to some batteries lasting unusually long. Suppose a quality control analyst selects a random sample of 64 batteries from a large production batch. Questions: a) Explain whether the distribution of sample means will be approximately normal. Justify your answer using the Central Limit Theorem. b) Compute the mean and standard deviation of the sampling distribution of the sample mean. c) What is the probability that the sample mean lifetime of the 64 batteries exceeds 310 hours? d) Discuss how the sample size affects the shape and variability of the sampling distribution.arrow_forward
- A biologist is investigating the effect of potential plant hormones by treating 20 stem segments. At the end of the observation period he computes the following length averages: Compound X = 1.18 Compound Y = 1.17 Based on these mean values he concludes that there are no treatment differences. 1) Are you satisfied with his conclusion? Why or why not? 2) If he asked you for help in analyzing these data, what statistical method would you suggest that he use to come to a meaningful conclusion about his data and why? 3) Are there any other questions you would ask him regarding his experiment, data collection, and analysis methods?arrow_forwardBusinessarrow_forwardWhat is the solution and answer to question?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill
College Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage Learning
Big Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin Harcourt
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
College Algebra (MindTap Course List)
Algebra
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:Cengage Learning
Big Ideas Math A Bridge To Success Algebra 1: Stu...
Algebra
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:Houghton Mifflin Harcourt
Hypothesis Testing using Confidence Interval Approach; Author: BUM2413 Applied Statistics UMP;https://www.youtube.com/watch?v=Hq1l3e9pLyY;License: Standard YouTube License, CC-BY
Hypothesis Testing - Difference of Two Means - Student's -Distribution & Normal Distribution; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=UcZwyzwWU7o;License: Standard Youtube License