I conduct an online study to determine whether rewards reduce procrastination. All participants are asked to complete a task sometime before a deadline (10 days from now). The computer ra one of three groups, and emails them their instructions; one group receives a reward as soon as they do the task (contingent reward); a second group receives rewards as soon as they finish th deadline (non-contingent reward) and the third group does not receive rewards at all (no reward). Three participants in the no reward condition do not complete the task, and so are dropped f variable is the amount of time (in days) it takes participants to complete the task. The JAMOVI output is attached.
Q: Ho: There is no association between how the ball is rebounded and the number of shots made (u = 0).…
A: They randomly determined the order that they took these shots, with some getting their own rebounds…
Q: This problem comes from the green activity pack, page AP – 54. You may find the prompts in the…
A: Solution
Q: Approximately 76% of statistics students complete their homework before the due date. Each student…
A: Approximately 76% of statistics students complete their homework before the due date.i.e.…
Q: Your workstation experiences seven consecutive collisions. a. What is the minimum amount of time…
A: Part a) The minimum amount of time that it might have to wait before sending its frame is t=0 Answer…
Q: he National Football League (NFL) holds its annual draft of the nation's best college football…
A: Given Information : The National Football League (NFL) at the a g e s Anach year to the da t ing…
Q: A cognitive psychologist is interested in examining how well people performed a task in relation to…
A: A) Introduction: Consider that μ1, μ2, and μ3 are the mean numbers of correct answers for easy,…
Q: 10. Recent research has shown that creative people are more likely to cheat than their less-creative…
A: Given that N1=27
Q: Dr. Barton hypothesizes that if 1st grade students are assigned to practice sight word flashcards…
A: The control group is: Group B because this group was not given any intervention (10 minutes of daily…
Q: A report summarized a survey of 2,320 working adults. The report indicates that 464 of the working…
A: Given: n=2320 number of the working adults surveyed said they were very concerned that their job…
Q: The 99% confidence interval for the mean difference (A – B) in the time it takes to experience…
A: The 99% confidence interval for the mean difference (A – B) in the time it takes to experience…
Q: It describes a scenario in which a math teacher named Matt allows his students to use a 1-page…
A: Ans: Please read comments in the code for better understanding. import java.io.File; // Import the…
Q: structed to offer them a double-miles promotion. About 6% of all cardholders hold platinum cards,…
A: here given , Raaj works at the customer service call center of a major credit card bank. Cardholders…
Q: A traffic light is installed to allow traffic from a seldom used side street to cross a 4-lane…
A: H0: p(red) = 0.8, p(yellow) = 0.05, p(green) = 0.15 Ha: either of the proportion is different
Q: 1. This is an example of a: O a. One-sample z-test O b. One-sample t-test Oc. One-sample proportion…
A: We have given that The information of new model and old model keyboard. Let difference = New - Old
Q: Step 1 of 3 : State the null and alternative hypotheses for the test. Fill in the blank below.…
A: We need to state suitable Null and Alternative Hypothesis for the problem situation
Q: Given that there are more women in the labor force, more women holding advanced degrees, how does…
A: Answer: Given that: Given that there are more women in the labor force, more women holding…
Q: Sarah believes that completely cutting caffeine out of a person’s diet will allow him or her more…
A:
Q: Number of Sales on Wed for 8 Weeks Wed with Sign Wed without Sign 7 6. 8. 11 a.) Did customers make…
A: Independent t test is given by; t=(∑D)N∑D2-(∑D)2N(N-1)N where ∑D is sum of differences ∑D2 is the…
Q: The Bulldog Electronics Company is currently producing a submarine detector for the Navy. The…
A: Given:mean µ = 400 hoursstandard deviation σ = 100 hoursLet X be the random variable that represent…
Q: An educational psychologist is concerned about the effect of distractions on studying. The…
A: Solution
Q: (a) Use the given information to estimate the probability that a newborn baby is female, given that…
A: The table represents the 1,000 births predicted by ultrasound: The conditional probability of event…
Q: Professor Adams wrote a book called Improving Your Memory. The professor claims that if you follow…
A: Introduction: Sign test is used in case of dependent or matched pairs. The exam scores for the first…
Q: The Bulldog Electronics Company is currently producing a submarine detector for the Navy. The…
A: To find the probability that a fuel cell, which has already been functioning for 500 hours, will…
Q: Working at home: According to the U.S. Census Bureau, 32% of men who worked at home were college…
A: Given that Population proportion p=32%=0.32 Sample size n =519 Favorable cases x =165
Q: In Nigeria, with the monsoon, there was a drastic increase in cases of Malaria. Peniguillin is a…
A: Given, Proportion of nausea treated with peniquillin Proportion of nausea treated with placebo The…
Q: Professor Adams wrote a book called Improving Your Memory. The professor claims that if you follow…
A: (a) The sign test is the nonparametric test which is used when the data is dependent or matched…
Q: Sarah chose to live on the honors floor of her dorm because she was told that the students on that…
A: Denote μ as the population mean hours of study.
Q: Amit Almor, a psychology researcher at the University of South Carolina, conducted a series of…
A: ANOVA table is: Source of variation SS df MS F Between treatments 3095.00 2…
Q: This question has several parts that must be completed sequentially. If you skip a part of the…
A: According to the provided data, the number of dots on different faces of a die are 1, 2, 3, 4, 5, or…
Q: Large companies typically collect volumes of data before designing a product, not only to gain…
A:
Q: A seamstress works exclusively on one stage of the process of a special garment design. This phase…
A: We need to, Draw a transition graph. Determine the transition matrix. of the number of unprocessed…
Q: Large companies typically collect volumes of data before designing a product, not only to gain…
A: Solution: Given information: n1= 97 Sample size of people in my market category n2= 116 Sample size…
Q: You enroll 4,000 women in 1990 and follow them for 10 years. Liver cirrhosis is your outcome; none…
A: There is enrolment of 4000 women and follow them for 10 years. We have to give answers of mentioned…
Q: Courier 2 was used 15 times, and their average delivery time was 36 minutes with a standard…
A: It is given that For Courier 1: Mean, X̅1 = 43 Standard deviation, s1 = 12 Sample size, n1 = 12 For…
Q: Imagine I wanted to study the effectiveness of the Mediterranean diet on people’s memory. I tested a…
A: Introduction: It is required to identify the parameter and statistic of interest.
Q: Temple Trucking Co. just hired Ed Rosenthal to verify daily invoices and accounts payable. He took 8…
A:
Q: hour, while 10% will switch to the music station at the station break. Of the listeners who are…
A: The state transition matrix for the given problem is: A=0.90.10.50.5 To find steady state vector…
Q: Researcher believe that 75% of students (or more) can benefit from listening to music while studying…
A: Hi! Thank you for the question. As per the honor code, we are allowed to answer three sub-parts at a…
Q: The Bulldog Electronics Company is currently producing a submarine detector for the Navy. The…
A: Step 1: Consider a random variable is x, which defines the time to failure of a randomly selected…
Q: Based on long experience, an airline found that about 4% of the people making reservations on a…
A:
Q: Overweight participants who lose money when they don’t meet a specific exercise goal meet the goal…
A: Participants who lost the money and met the goal for average in 45 days Participants who won the…
Given information:
The JAMOVI output for ANOVA and Post Hoc Tests is given.
Step by step
Solved in 2 steps
- StarHortons Cup, the coffee company, wants to determine how long caffeine lasts throughout the day when individuals have a cup of one of their 3 types of coffee at 9am. They will then measure the levels of caffeine in these individuals’ systems at 10am, 12am, 2pm, 4pm, 6pm and 8pm. They want to have at least 20 observations per group. How many separate/distinct groups of participants are needed if they want to conduct this experiment using a mixed-measures ANOVA? 18 6 20 3I need to see if I am doing these problems correctly. I am more of a handwritten person so if you can show me how to write these out I would appreciate it for our teacher only shows us how to use a calculator. Nationally, patients who go to the emergency room wait an average of 7 hours to be admitted into the hospital. Do patients at rural hospitals have a lower waiting time? The 15 randomly selected patients who went to the emergency room at rural hospitals waited an average of 5.9 hours to be admitted into the hospital. The standard deviation for these 15 patients was 1.4 hours. What can be concluded at the the αα = 0.05 level of significance level of significance? For this study, we should use The null and alternative hypotheses would be: H0:H0: H1:H1: The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is αα Based on this, we should…One of the most impressive, innovative advances in online fundraising over the past decade is the rise of crowd-funding websites. While features differ from site to site, crowd-funding sites are websites that allow you to set up an online fundraising campaign based around a fundraising page, and accept money directly from that page using the website's own credit card processor. A certain crowd-funding website reported that 131 of 357 technology crowd-funding projects were successfully launched in the past year and 345 of 872 film and video crowd-funding projects were successfully launched in the past year. a. Is there evidence of a significant difference in the proportion of technology crowd-funding projects and film and video crowd-funding projects that were successful? (Use α = 0.01.) a) State the null and alternative hypotheses, where π1 is the population proportion of successful technology crowd-funding projects and π2 is the population proportion of successful…
- A researcher thinks some social media sites are more prone to narcissistic behavior (excessive posting) than others. To examine the relationship between narcissism and social media, she recruits users of three different social media sites (Facebook, Twitter and Instagram), follows them for 24 hours and records the number of posts made by each user. The number of posts is given in the table below. Twitter Facebook Instagram 10 7 14 10 8. 10 10 10 11 9. www. 12 wwww. 11 13 12 8. 7 8. 11 8 10 12 11 11 a. Perform a complete hypothesis test to determine whether there are any significant differences among the three groups. Test at the .05 level of significance. SHOW ALL YOUR WORK b. Do you need to perform post hocs? Explain but do not compute the post hocs. C. Compute effect size. d. Summarize your findings in a source table. e. Write an interpretation of our results in APA-format (include means and SDs in your interpretation)Is there a link between dark chocolate and weight loss when compared to milk chocolate? A nutritionist gathers 60 people, selected at random, then randomly assigns half of the group to eat a single dark chocolate bar after dinner each night and the other half to eat a single milk chocolate bar after dinner each night for 6 months. Everyone is to keep track of the other food they eat in an app provided. The nutritionist then compares each person’s weight after the 6 months to their weight before eating the different chocolates accounting for the other calories consumed. 12) What type of study does this describe? a) Survey b) Observational study c) Experimental studyA salon owner estimates the number of clients she is expecting during the festive season to be 20% during Monday to Wednesday, 20% on Thursday and 60% over the weekend. She therefore hires additional staff to assist during the weekend to meet the client demand. She however only observes 30% during Monday to Wednesday, 20% on Thursday and 50% over the weekend in the first week of December. The salon owner is uncertain whether she should reduce the planned staff for the December festive period due the observed trend or not. She conducts a statistical test at α = 0.05 to determine if the observed trend fits the expected trend. Which of the following statements is true? A. The conclusion of the test is that she should not keep the additional staff for the weekend. B. The df for this test is 3. C. The p-value is greater than α. D. The null hypothesis is that the observed trend is different to the expected trend. E. The test statistic is χ2 = 5.33.
- A school Psychologist is interested in the effect of violent television programs on a child's agression depending on if the show is a cartoon or not. Eighty children were recruited and were divided into equal groups. Half of the children watched a violent television program while the other half watched a non- violent program. Half of the children watched a cartoon while the other half watched a show that was not a cartoon. The children were then placed in a small group and the researcher measured the level of agressiveness of each child. A) z- test B) t - test C) test independent samples D) T - TEST RELATED SAMPLES E) ANOVA F) FACTORIAL ANOVA G) repeated measures ANOVA H) pearson correlation i) chi squareSarah believes that completely cutting caffeine out of a person's diet will allow him or her more restful sleep at night. In fact, she believes that, on average, adults will have more than two additional nights of restful sleep in a four-week period after removing caffeine from their diets. She randomly selects 8 adults to help her test this theory. Each person is asked to consume two caffeinated beverages per day for 28 days, and then cut back to no caffeinated beverages for the following 28 days. During each period, the participants record the numbers of nights of restful sleep that they had. The following table gives the results of the study. Test Sarah's claim at the 0.05 level of significance assuming that the population distribution of the paired differences is approximately normal. Let the period before removing caffeine be Population 1 and let the period after removing caffeine be Population 2. Numbers of Nights of Restful Sleep in a Four-Week Period With Caffeine 24 22 24 20…A medical study is conducted to determine which migraine treatment, A or B, provides faster relief. The study uses 10 volunteers who claim to suffer from migraines. Half of the volunteers are randomly assigned to use treatment A when they experience their first migraine. The other half are assigned to use treatment B. Then, after no treatment for one month, the treatments are reversed. The volunteers each record the amount of time it takes, in minutes, to experience relief from their migraine under each treatment. The data are displayed in the table. A 3-column table with 10 rows. Column 1 is labeled volunteer with entries 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. Column 2 is labeled Treatment A with entries 10, 13, 13, 9, 13, 12, 14, 10, 8, 7. Column 3 is labeled Treatment B with entries 19, 18, 19, 15, 20, 16, 16, 16, 13, 17. A 99% confidence interval for the mean difference (A – B) in the time it takes to experience relief is –8.37 minutes to 0.732 minutes. Based on the confidence interval,…
- Mateo believes that completely cutting caffeine out of a person's diet will allow them more restful sleep at night. He randomly selects 8 adults to help him test this theory. Each person is asked to consume two caffeinated beverages per day for 28 days and then cut back to no caffeinated bevarages for an additional 28 days. During each period, the participants record the number of nights of restful sleep that they had. The following table gives the results of the study. Test Mateo's claim at the 0.05 level of significance. Give answers to 4 decimal places as needed. Number of Nights of Restful Sleep in a Four-Week Period 15 With Caffeine 21 20 22 24 18 21 24 20 26 26 22 21 23 27 23 Without Caffeine a) The normal probability plot showed the differences follow a normal distribution and the boxplot showed no outliers. b) Test the claim (1) Determine the null and alternative hypotheses. Enter correct symbol and values Ho: H₁: (2) Type of test: (3) a = (4) Test statistic (to) = p-value =…Workers at a particular mining site receive an average of 35 days paid vacation, which is lower than the national average. The manager of this plant is under pressure from a local union to increase the amount of paid time off. However, he does not want to give more days off to the workers because that would be costly. Instead he decides he should fire 10 employees in such a way as to raise the average number of days off that are reported by his employees. In order to achieve this goal, should he fire employees who have the most number of days off, least number of days off, or those who have about the average number of days off? a. He should fire employees who have the most number of days off. b. No matter who he fires, it will not increase the amount of paid time off. c. He should fire employees who have the average number of days off. d. He should fire employees who have the least number of days off.The department of code enforcement of a country government issues permits to general contractors to work on residential projects. For each permit issued, the department inspects the result of the project and gives a "pass" or "fail" rating. A failed project must be re-inspected until it receives a pass rating. The department had been frustrated by the high cost of re-inspection rate and decided to publish the inspection records of all contractors on the web. It was hoped that public access to the records would lower the re-inspection rate. A year after the web access was made public, two samples of records were randomly selected. One sample was selected from the pool of records before web publication and one after. The proportion of projects that passed on the first inspected was noted for each sample. The results are summarized below. No Public Web Access nį = 500, ĝ1 = 0.67 Public Web Access n2 = 100, p2 = 0.80 A test, at a 0.10 level of significance, is to be conducted as to whether…