When people learn a new task, their performance usually improves when they are tested the next...
When people learn a new task, their performance usually improves when they are tested the next day, but only if they get at least 6 hours of sleep (Stickgold, Whidbee, Schirmer, Patel, & Hobson, 2000). The following data demonstrate this phenomenon. The participants learned a visual discrimination task on one day, and then were tested on the task the following day. Half of the participants were allowed to have at least 6 hours of sleep and the other half were kept awake all night. Research question: Is there a difference in task score between the two conditions? Use a two-tailed test with = .05.
Test the homogeneity of variance assumption using F-max. Follow the four steps below. Steps in testing the homogeneity of variance assumption 1) State the hypotheses. Use the same the alpha level as for the hypothesis test. 2) Define the critical region. 3) Compute the test statistic. 4) Make a decision.
b. Do all steps in hypothesis testing for the research question presented.
c. Construct and Interpret the 99% confidence interval.
| Amount of Sleep | M | SD | N |
|---|---|---|---|
| 6 hours of sleep | 72.00 | 8.47 | 14 |
| No sleep | 65.00 | 7.36 | 14 |
Homework Answers
Add Answer to:
When people learn a new task, their performance usually improves
when they are tested the next...
Suppose that a psychologist is interested in performance on a cognitive task under sleep-deprived and rested...
Suppose that a psychologist is interested in performance on a cognitive task under sleep-deprived and rested conditions among 10 participants. Performance will be measured by the number of errors made by the participants in each condition. The researcher believes that more errors will be made under the sleep-deprived condition. Her observations are reported below. Use the 7 steps of null hypothesis testing to test her hypothesis, set alpha at .01. For this problem, MD = -3.1 and SED = 3.14...
1. (15 pts total) Fourteen students participated in a research study on the effect of sleep...
1. (15 pts total) Fourteen students participated in a research study on the effect of sleep deprivation in a motor skill task. The students played the game "Operation" either after a full night of sleep or after being kept awake for 36 hours. Each task was measured two weeks apart. Half of the students were randomly assigned to sleep deprivation in the first week and a full night of sleep in the second week, and the other half completed the...
1 A researcher wants to find out which type of classroom instruction significantly improves students’ test...
1 A researcher wants to find out which type of classroom instruction significantly improves students’ test performance. He designed four types of instruction for four samples of students. Later all four samples were given the same test and their average performance was compared. What statistical test should be used by the researcher to analyze the results of this study? A. Pearson correlation B. t-test for independent groups C. one-factor Anova for between groups D. Chi2 for Independence 2 A researcher...
1. We reject the null hypothesis only when: a. our sample mean is larger than the population mean. b. the p value asso...
1. We reject the null hypothesis only when: a. our sample mean is larger than the population mean. b. the p value associated with our test statistic is greater than the significance level of the test we have chosen. c. our sample mean is smaller than the population mean. d. the p value associated with our test statistic is smaller than the significance level of the test we have chosen. 2. In a study of simulated juror decision making, researchers...
answer please Q 14 to an expected syn- chrony score of 7.76; they then reported arscore...
answer please Q 14
to an expected syn- chrony score of 7.76; they then reported arscore of 2.27 for this difference. This esult is statistically significant at p<05. Explain this result to a person who is familiar with hypothesis testing with a known population variance but not with for the 30 I A researcher conducts a study of perceptual illusions under two different lighting con- ditions Twenty participants were each tested under both of the two different condi- ons. The...
1. Many companies use a incoming shipments of parts, raw materials, and so on. In the...
1. Many companies use a incoming shipments of parts, raw materials, and so on. In the electronics industry, component parts are commonly shipped from suppliers in large lots. Inspection of a sample of n components can be viewed as the n trials of a binomial experimem. The outcome for each component tested (trialD will be that the component is classified as good or defective defective components in the lot do not exceed 1 %. Suppose a random sample of fiver...
Can you please explain in simple terms the methods of this experiment? I'm having difficulty visualizing...
Can you please explain in simple terms the methods of this experiment? I'm having difficulty visualizing and understanding what is being done. I have copied and pasted some of the text from the article. Thank you! Abstract : Obesity, high-fat diets, and subsequent type 2 diabetes (T2DM) are associated with cognitive impairment. Moreover, T2DM increases the risk of Alzheimer's disease (AD) and leads to abnormal elevation of brain beta-amyloid levels, one of the hallmarks of AD. The psychoactive alkaloid caffeine...
10. The Beck & Watson article is a Group of answer choices quantitative study qualitative study...
10. The Beck & Watson article is a
Group of answer choices
quantitative study
qualitative study
11. Beck & Watson examined participants' experiences and
perceptions using what type of research design?
Group of answer choices
particpant obersvation
phenomenology
12. Select the participants in the Beck & Watson study
Group of answer choices
Caucasian women with 2-4 children
Caucasian pregnant women
13. In the Beck & Watson study, data was collected via
a(n)
Group of answer choices
internet study
focus group...
14. Select the number of participants in the Beck & Watson study Group of answer choices...
14. Select the number of participants in the Beck & Watson
study
Group of answer choices
8
13
22
35
15. Beck & Watson determined their final sample size via
Group of answer choices
coding
saturation
triangulation
ethnography
16.Through their study, Beck & Watson determined
Group of answer choices
after a traumatic birth, subsequent births have no troubling
effects
after a traumatic birth, subsequent births brought fear, terror,
anxiety, and dread
Subsequent Childbirth After a Previous Traumatic Birth Beck, Cheryl...
Using the book, write another paragraph or two: write 170 words: Q: Compare the assumptions of...
Using the book, write another paragraph or two: write 170
words:
Q: Compare the assumptions of physician-centered and
collaborative communication. How is the caregiver’s role different
in each model? How is the patient’s role different?
Answer: Physical-centered communication involves the specialists
taking control of the conversation. They decide on the topics of
discussion and when to end the process. The patient responds to the
issues raised by the caregiver and acts accordingly. On the other
hand, Collaborative communication involves a...
1. (15 pts total) Fourteen students participated in a research study on the effect of sleep deprivation in a motor skill task. The students played the game "Operation" either after a full night of sleep or after being kept awake for 36 hours. Each task was measured two weeks apart. Half of the students were randomly assigned to sleep deprivation in the first week and a full night of sleep in the second week, and the other half completed the...
answer please Q 14
to an expected syn- chrony score of 7.76; they then reported arscore of 2.27 for this difference. This esult is statistically significant at p<05. Explain this result to a person who is familiar with hypothesis testing with a known population variance but not with for the 30 I A researcher conducts a study of perceptual illusions under two different lighting con- ditions Twenty participants were each tested under both of the two different condi- ons. The...
1. Many companies use a incoming shipments of parts, raw materials, and so on. In the electronics industry, component parts are commonly shipped from suppliers in large lots. Inspection of a sample of n components can be viewed as the n trials of a binomial experimem. The outcome for each component tested (trialD will be that the component is classified as good or defective defective components in the lot do not exceed 1 %. Suppose a random sample of fiver...
10. The Beck & Watson article is a
Group of answer choices
quantitative study
qualitative study
11. Beck & Watson examined participants' experiences and
perceptions using what type of research design?
Group of answer choices
particpant obersvation
phenomenology
12. Select the participants in the Beck & Watson study
Group of answer choices
Caucasian women with 2-4 children
Caucasian pregnant women
13. In the Beck & Watson study, data was collected via
a(n)
Group of answer choices
internet study
focus group...
14. Select the number of participants in the Beck & Watson
study
Group of answer choices
8
13
22
35
15. Beck & Watson determined their final sample size via
Group of answer choices
coding
saturation
triangulation
ethnography
16.Through their study, Beck & Watson determined
Group of answer choices
after a traumatic birth, subsequent births have no troubling
effects
after a traumatic birth, subsequent births brought fear, terror,
anxiety, and dread
Subsequent Childbirth After a Previous Traumatic Birth Beck, Cheryl...
Using the book, write another paragraph or two: write 170
words:
Q: Compare the assumptions of physician-centered and
collaborative communication. How is the caregiver’s role different
in each model? How is the patient’s role different?
Answer: Physical-centered communication involves the specialists
taking control of the conversation. They decide on the topics of
discussion and when to end the process. The patient responds to the
issues raised by the caregiver and acts accordingly. On the other
hand, Collaborative communication involves a...
Most questions answered within 3 hours.
-
A small body of mass m performs small oscillations sliding (no
rolling) along the bottom of...
asked 3 minutes ago -
The electric field in the region between two oppositely charged,
parallel, conducting plates has a magnitude...
asked 2 minutes ago -
A simple random sample was taken to test the claim that the
population mean is no...
asked 1 hour ago -
A set of length measurements are obtained with the values 165.6
± 0.3, 165.1± 0.4,166.4± 1.0,...
asked 1 hour ago -
1. Which of the following is true about unconscionable
contracts?
a. A term is substantially unconscionable...
asked 16 minutes ago -
A company is interested in estimating the costs of lunch
in their cafeteria. After surveying employees,...
asked 48 minutes ago -
A 0.2m diameter ball with an initial velocity of 8m/s rolls up a
hill without slipping....
asked 31 minutes ago -
I want to redraft the solution, using other words , use your own
words don't copy...
asked 20 minutes ago -
Hyundai Motors is considering threesites—A, B,C —at which to
locate a factory to build its new-model...
asked 22 minutes ago -
Learning Outcomes:
Upon the successful completion of this module, you should
understand the following concepts:
Strategic...
asked 23 minutes ago -
Identify four of the five major types of organizations within
the federal bureaucracy, and give examples...
asked 32 minutes ago -
The following data have been obtained
for the effect of solvent composition on the solubility of...
asked 32 minutes ago