EBK APLIA FOR GRAVETTER/WALLNAU/FORZANO
9th Edition
ISBN: 9781337273367
Author: Forzano
Publisher: VST
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 11, Problem 11P
College athletes, especially males, are often perceived as having very little interest in the academic side of their college experience. One common problem is class attendance. To address the problem of class attendance, a group of researchers developed and demonstrated a relatively simple but effective intervention (Bicard, Lott, Mills, Bicard, & Baylot-Cascy, 2012). The researchers asked each athlete in to text his academic counselor “in class” as soon as he arrived at the classroom. The researchers found significantly better attendance after the students began texting. In a similar study, a researcher monitored class attendance for a sample of n – 16 male athletes during the first three weeks of the semester and recorded the number of minutes that each student was lair to class. The athletes were then asked to begin texting their arrival at the classroom and the researcher continued to monitor attendance for another three weeks. For each athlete, the average lateness for the first three weeks and for the second three weeks were calculated, and the difference score was recorded. The data showed that lateness to class decreased by an average of MD – 21 minutes with SS = 2,940 when the students were texting.
a. Use a two-tailed test with α = .01 to determine whether texting produced a significant change in attendance.
b. Compute a 95% confidence
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Which type of fast-food chain fills orders most accurately at the drive-thru window?
The Quick Service Restaurant (QSR) magazine drive-thru study visits restaurants in
the largest fast-food chains in all 50 states. Visits occurred throughout the day,
starting at 11:00 A.M and ending at 2:30 A.M. During each visit, the researcher
ordered a main item, a side item, and a drink and made a minor special request such
as a beverage with no ice. After receiving the order, all food and drink items were
checked for complete accuracy. Any food or drink item received that was not exactly
as ordered resulted in the order being classified as inaccurate. Also included in the
measurement of accuracy were condiments asked for, napkins, straws, and correct
change. Any errors in these resulted in the order being classified as innacurate. In
2015, the ethnic category including Del Taco, El Pollo Loco, Fazoli's, Panda Express,
Taco Bell, and Taco John's had the fewest inaccuracies, with only 42 of 457…
College athletes, especially males, are often perceived as having very little interest in the academic side of their college experience. One common problem is class attendance. To address the problem of class attendance, a group of researchers developed and demonstrated a relatively simple but effective intervention (Bicard, Lott, Mills, Bicard, & Baylot-Casey, 2012). The researchers asked each athlete to text his academic counselor “in class” as soon as he arrived at the classroom. The researchers found significantly better attendance after the students began texting. In a similar study, a researcher monitored class attendance for a sample of n = 16 male athletes during the first three weeks of the semester and recorded the number of minutes that each student was late to class. The athletes were then asked to begin texting their arrival at the classroom, and the researcher continued to monitor attendance for another three weeks. For each athlete, the average lateness for the first…
A clinical researcher would like to know whether a certain drug is more effective at treating
lepression than just psychotherapy alone. In order to study this topic, the researcher gains access to
a population of individuals diagnosed with depression and administers surveys to a random subset
of that population. To assess the relationship between therapy type and depression symptoms, the
survey asks participants what their current treatment plan involves (drug therapy, psychotherapy,
both drug and psychotherapy, or no therapy) and what their current depression symptoms include.
This study is a(n):
observational study
randomized comparative experiment
stratified random sample
block design
Chapter 11 Solutions
EBK APLIA FOR GRAVETTER/WALLNAU/FORZANO
Ch. 11.1 - In a repeated-measures study, the same group of...Ch. 11.1 - A researcher conducts a research study comparing...Ch. 11.1 - For an experiment comparing two treatment...Ch. 11.2 - What is the mean for the difference scores for the...Ch. 11.2 - Which of the following is the correct statement of...Ch. 11.2 - Which of the following accurately describes the...Ch. 11.2 - Prob. 4LCCh. 11.3 - A researcher conducts a repeated-measures study...Ch. 11.3 - Prob. 2LCCh. 11.4 - Prob. 1LC
Ch. 11.4 - Prob. 2LCCh. 11.4 - A research report describing the results from a...Ch. 11.4 - Prob. 4LCCh. 11.4 - Prob. 5LCCh. 11.5 - Which of the following possibilities is a concern...Ch. 11.5 - For which of the following situations would an...Ch. 11.5 - Prob. 3LCCh. 11 - For the each of the following studies determine...Ch. 11 - What is the defining characteristic of a...Ch. 11 - A researcher conducts an experiment comparing two...Ch. 11 - A repeated-measures and an independent-measures...Ch. 11 - A sample of n = 16 individuals participates in a...Ch. 11 - Resenhoeft, Villa, and Wiseman (2008) conducted a...Ch. 11 - The following data are from a repeated-measures...Ch. 11 - When you get a surprisingly low price on a product...Ch. 11 - Masculine-themed words (such us competitive,...Ch. 11 - The stimulant Ritalin has been shown to increase...Ch. 11 - College athletes, especially males, are often...Ch. 11 - Callahan (2009) demonstrated that tai chi can...Ch. 11 - Research results indicate that physically...Ch. 11 - There is some evidence suggesting that you are...Ch. 11 - In Example 8.1 (page 200) we discussed a research...Ch. 11 - Solve the following problems. a. A...Ch. 11 - Solve the following problems. a. A...Ch. 11 - A sample of difference stores from a...Ch. 11 - Participants enter a research study with unique...Ch. 11 - Swearing is a common, almost reflexive, response...Ch. 11 - The previous problem demonstrates that removing...Ch. 11 - Explain the difference between a matched-subjects...Ch. 11 - A researcher conducts an experiment comparing two...Ch. 11 - A repeated-measures, a matched-subjects, and an...
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
- College athletes, especially males, are often perceived as having very little interest in the academic side of their college experience. One common problem is class attendance. To address the problem of class attendance, a group of researchers developed and demonstrated a relatively simple but effective intervention (Bicard, Lott, Mills, Bicard, & Baylot-Casey, 2012). The researchers asked each athlete to text his academic counselor “in class” as soon as he arrived at the classroom. The researchers found significantly better attendance after the students began texting. In a similar study, a researcher monitored class attendance for a sample of n = 16 male athletes during the first three weeks of the semester and recorded the number of minutes that each student was late to class. The athletes were then asked to begin texting their arrival at the classroom and the researcher continued to monitor attendance for another three weeks. For each athlete, the average lateness for the first…arrow_forwardIn a classic study, Shrauger (1972) examined the effect of an audience on performance for two groups of participants: high self-esteem and low self-esteem individuals. The participants in the study were given a problem-solving task with half of the individuals in each group working alone and a half working with an audience. Performance on the problem-solving task was measured for each individual. The results showed that the presence of an audience had little effect on high self-esteem participants but significantly lowered the performance for the low self-esteem participants. a. How many factors does this study have? What are they? b. Describe this study using the notation system that indicates factors and numbers of levels of each factor.arrow_forwardBelow is data from a study examining the effects of two different psychotherapy treatments on self-esteem. Specifically, two different treatment types (treat1 and treat2) were compared to a waiting list control group in terms of increasing self-esteem; the main question concerned whether each separate therapy type was different from no treatment at all. The values shown below are the self-esteem scores for the participants in each group (higher values indicate greater self-esteem). a. What inferential test did you use? b. Using an alpha level of .05, determine whether there were any mean differences between the groups of interest?arrow_forward
- Recent research indicates that the effectiveness of antidepressant medication is directly related to the severity of the depression (Khan, Brodhead, Kolts & Brown, 2005). Based on pretreatment depression scores, patients were divided into four groups based on their level of depression. After receiving the antidepressant medication, depression scores were measured again and the amount of improvement was recorded for each patient. The following data are similar to the results of the study. Low Moderate High Moderate Moderately Severe Severe 1.6 2.9 3.8 3.4 0.9 1.3 3 2.8 1.8 3.1 3.3 3.2 2.7 3.7 2.4 4.9 3.8 2.9 3.7 3.2 4.9 1.7 From this table, conduct an one-way ANOVA. Calculate the F-ratio and p-value. Be sure to round your answers to three decimal places. Assume all population and ANOVA requirements are met. F-ratio: p-value: What is your final conclusion? Use a significance level of a = 0.01. O There is sufficient evidence that there exists a significant difference between treatments. O…arrow_forwardIn a classic study, Shrauger (1972) examined the effect of an audience on performance for two groups of participants: high self-esteem and low self-esteem individuals. The participants in the study were given a problem-solving task with half of the individuals in each group working alone and half working with an audience. Performance on the problem-solving task was measured for each individual. The results showed that the presence of an audience had little effect on high self-esteem participants but significantly lowered the performance for the low self-esteem participants. a. How many factors does this study have? What are they? b. Describe this study using the notation system that indicates factors and numbers of levels of each factor. c. Was there a significant interaction? Describe it.arrow_forwardThe popular show 13 Reasons Why is organized around the suicide of the 17-year-old Hannah, In the show, Hannah herself describes reasons why she decided to kill herself. One of the early episodes originally depicted her suicide in graphic detail. Some critics and mental health advocates argued that the series represented suicide irresponsibly and worried that the show would lead to copycat suicides or self-harm. To test the effect of the show, Niederkrotenthaler et al. (2019) first used social media to determine the exact months of the year when the show was being discussed. They found that public attention was highest during April 2017. What type of design did they use? Group of answer choices Interrupted time-series design Nonequivalent control group posttest-only design Quasi-independent variable None of the abovearrow_forward
- A hypothetical study looks at the effect of drinking alcohol on health. Across all genders and age groups, people who do not drink tend to be healthier on average than people who do drink. However, people who drink regularly are on average healthier than those people who have recently stopped drinking. Is it reasonable to conclude that for the sake of health, we should not start drinking, but if we have already started drinking alcohol, it is healthier to continue and not to stop?arrow_forwardIn studies examining the effect of humor on interpersonal attractions, McGee and Shevlin (2009) found that an individual’s sense of humor had a significant effect on how the individual was perceived by others. In one part of the study, female college students were given brief descriptions of a potential romantic partner. The fictitious male was described positively as being single and ambitious and having good job prospects. For one group of participants, the description also said that he had a great sense of humor. For another group, it said that he has no sense of humor. After reading the description, each participant was asked to rate the attractiveness of the man on a seven-point scale from 1 (very unattractive) to 7 (very attractive). A score of 4 indicates a neutral rating. The females who read the “great sense of humor” description gave the potential partner an average attractiveness score of M = 4.53 with a standard deviation of s = 1.04. If the sample consisted of n = 16…arrow_forwardDespite the availability of several modes of transportation, including metro and ride-booking services, most people in the Washington, D.C., area continue to drive their own cars to get around (The Washington Post, June 6, 2019). According to a survey, 62% of area adults use their own cars daily. Suppose only 38% of the area’s adults under 35 use their own cars daily. It is known that 43% of the area’s adults are under 35. What is the probability that a Washington, D.C., area adult is under 35 and uses his/her own car daily? If a Washington, D.C., area adult uses his/her own car daily, what is the probability that he/she is under 35?arrow_forward
- Recent research indicates that the effectiveness of antidepressant medication is directly related to the severity of the depression (Khan, Brodhead, Kolts & Brown, 2005). Based on pretreatment depression scores, patients were divided into four groups based on their level of depression. After receiving the antidepressant medication, depression scores were measured again and the amount of improvement was recorded for each patient. The following data are similar to the results of the study. Low High Moderate Moderately Moderate Severe Severe 3.1 1.3 5.1 3.5 2.3 3.3 3.6 2.9 2.7 2.9 1.8 4.2 3 4 4.2 2 3.9 3.9 4.7 2.1 0.5 2.5 2.2 From this table, conduct an one-way ANOVA. Calculate the F-ratio and p-value. Be sure to round your answers to three decimal places. Assume all population and ANOVA requirements are met. F-ratio: p-value: What is your final conclusion? Use a significance level of a = 0.02. O There is not enough evidence to determine a difference between the treatments. O There is…arrow_forwardRecently airlines have cut services, such as meals and snacks during flights, and started charging extra for some services, such as accommodating overweight luggage, last-minute flight changes, and pets traveling in the cabin. However, they are still concerned about service. Recently, a group of four carriers hired Brunner Marketing Research Inc. to survey passengers regarding their level of satisfaction with a recent flight. The survey included questions on ticketing, boarding, in-flight service, baggage handling, pilot communication, and so forth. Twenty-five questions offered a range of possible answers: excellent, good, fair, or poor. A response of excellent was given a score of 4, good a 3, fair a 2, and poor a 1. These responses were then totaled, so the total score was an indication of the satisfaction with the flight. The greater the score, the higher the level of satisfaction with the service. The highest possible score was 100. Brunner randomly selected and surveyed…arrow_forwardMost air travelers now use e-tickets. Electronic ticketing allows passengers to not worry about a paper ticket, and it costs the airline companies less to handle than paper ticketing. However, in recent times the airlines have received complaints from passengers regarding their e-tickets, particularly when connecting flights and a change of airlines were involved. To investigate the problem, an independent watchdog agency contacted a random sample of 20 airports and collected information on the number of complaints the airport had with e-tickets for the month of March. At the .05 significance level, can the watchdog agency conclude the mean number of complaints per airport is less than 15 per month? What assumption is necessary before conducting a test of hypothesis? Is it reasonable to conclude that the population follows a normal distribution? Conduct a test of hypothesis and interpret the results. The information is reported below: 14 12 14 15 16 5 15 12 14 12 13 14 12 13 13 12 16…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
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Introduction to experimental design and analysis of variance (ANOVA); Author: Dr. Bharatendra Rai;https://www.youtube.com/watch?v=vSFo1MwLoxU;License: Standard YouTube License, CC-BY