A study conducted by Columbia University compared the cognitive ability of stroke patients three months after they'd been admitted to the hospital with a controlgroup of those who had not had a stroke. The bar graph below is based on the study, and illustrates the number of errors made on a neuropsychological test bythe patients who had had a stroke with those who had not had a stroke.Cognitive Impairment After Stroke70..605040302010Number of Errors MadeControl Group OsStroke PatientsThe information and graph in this problem is based on the report found at http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1072451/pdf/jnnpsyc00032-0074.pdfUse the bar graph to answer the following.a. How many stroke patients made no errors on the test?реopleb. How many total members of the control group made 1, 2, or 3 errors on the test?реoplec. How many fewer people from the control group made 6 errors on the test when compared to the group of stroke patients?peopleFrequency

Answered: Image /qna-images/answer/4189aa30-0e45-4b96-a148-1f16e9403512.jpg

Answered: A study conducted by Columbia…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

The personality characteristics of business leaders (e.g., CEOs) are related to the operations of the businesses that they lead (Oreg & Berson, 2018). Traits like openness to experience are related to positive financial outcomes and other traits are related to negative financial outcomes for their businesses. Suppose that a board of directors is interested in evaluating the personality of their leadership . Among a sample of n = 16 managers , the sample mean of the openness to experiences dimension of personality was M = 4.50 . Assuming that mu = 4.24 and sigma = 1.05 (Cobb -Clark & Schurer , 2012) , use a two-dailed hypothesis test with alpha = .05 to test the hypothesis that this company's business leaders ' openness to experience is different from the population .
A research study was conducted about gender differences in "sexting." The researcher believed that the proportion of girls involved in “sexting” is less than the proportion of boys involved. The data collected in the spring of 2010 among a random sample of middle and high school students in a large school district in the southern United States is summarized in Table. Is the proportion of girls sending sexts less than the proportion of boys "sexting?" Test at a 1% level of significance. Table 2: Frequency of "sexts" sent by gender Gender Males Females Sent "sexts" 183 156 Total number surveyed 2231 2169
Part 1 of 4 A doctor in Baltimore wants to know whether the average life span for heart disease patients at four hospitals in the city differ. The data below represents the life span, in years, of heart disease patients from each hospital. Perform an ANOVA test with a 7% level of significance to test whether the average life span of heart disease patients in Baltimore differs depending on the hospital that treats them Life Span of Patients Treated at Hospital 1: 12.4, 17.5, 20, 0.1, 1.7, 21.5, 10.8, 7.2, 20.4, 11.5, 8.3, 3.7, 3.1, 3.7, 9.7, 13.2, 11.6, 14.8, 1.2, 5.6, 8.8, 6.2, 7.7, 8.5, 19.5, 2.4, 3.1, 8.3, 8.3, 26.3, 6.3, 16.1 Life Span of Patients Treated at Hospital 2: 9.4, 3.2, 6.4, 8.4, 18.7, 5.5, 21.7, 21.4, 6.5, 6.4, 14.2, 4.3, 16.6, 8.1, 7.5, 3.8, 19.9, 1.1, 1.6, 16.2, 16.6, 4, 11.9, 27.7, 24.9, 0.5, 9.1, 14.7, 8.4, 14.9, 18.1 Life Span of Patients Treated at Hospital 3: 35, 13.7, 3.8, 14.2, 5.7, 15.4, 21.6, 0, 11.9, 7.1, 6.4, 5.4, 17.9, 18.6, 14.3, 4, 10.5, 2.4, 2.5, 6.9,…
Fifty-four wild bears were anesthetized, and then their weights and chest sizes were measured and listed in a data set. Correlation Results Results are shown in the accompanying display. Is there sufficient evidence to support the claim that there is a linear correlation between the weights of bears and their chest sizes? When measuring an anesthetized bear, is it easier to measure chest size than weight? If so, does it appear that a measured chest size can be used to predict the weight? Use a significance level of a = 0.05. Correlation coeff, r: 0.974737 Critical r: + 0.2680855 P-value (two tailed): 0.000 ..... Determine the null and alternative hypotheses. Ho: P H1: P (Type integers or decimals. Do not round.)
A study investigating the effect of student gender on poor academic performance (measured as having a grade of B or lower) at the University of Colorado reported that 17% of male students had poor performance and that 11% of female students had poor performance. Given this information, can we determine if there is an association between sex and academic performance? (Choose the one best answer). Group of answer choices Yes, female students have a lower rate of poor academic performance therefore poor academic performance is associated with being a female student. No, male students only have a slightly higher prevalence of poor academic performance compared to female students and therefore there is no association between poor performance and gender. Yes, male students have a higher rate of poor academic performance therefore poor academic performance is associated with being a male student. No, the prevalence values alone cannot be used to assess an association between…
Which of the following scenario is an example of a pretest–posttest design? Group of answer choices comparison of the aggression scores of third-grade students and fifth-grade students matched on gender comparison of third grade boys to the known population comparison of the aggression scores when students are in third grade and when they are in fifth grade comparison of the aggression scores of boys and girls
A colleague is conducting research on adults' job satisfaction as it relates to gender, salary, and level of control felt over the work environment. Your colleague has collected data from a random sample of adults. Salary is measured in thousands of dollars. The control over one's work environment and job satisfaction scales are measured by averaging sets of items on a 0 to 7 point scale range, with low scores representing low control and low job satisfaction and higher scores representing a greater sense of control and job satisfaction. She is particularly interested in the relationship between job satisfaction and the person's perceived level of control. Gender Salary Control Job Satisfaction М 42 5 F 50 2 F 60 5 F 40 3 1 M 50 3 2 M 40 7 3 What are the mean and median levels of control found in her sample? 4, 3.5 47, 46 3.5, 3 О 3, 3.5
Harker and Keltner (2001) examined whether emotional well-being in later life could be predicted from the facial expressions of 141 women in their college yearbook photos. The predictor variable of greatest interest was the " positivity of emotional expression" in the college yearbook. They also had these photgraphs rated on physical attractiveness. They contacted the same women for follow-up psychological assessments at age 52 ( and at other ages, data not shown here). Here are the correlations of these two predictors ( based on ratings of the yearbook photo) with several of their self-reported social and emotional outcomes at age 52: In College Photo ---------------------------- At Age 52 Physical Attractiveness Posivity of facialexpression Negative emotionality .04 -.27…
Studies indicate that excessive noise at night can affect weight gain. One study of n = 127 rats compared the weight gain of rats exposed to excessive noise at night and the weight gain of rats in a quiet night environment. Sample statistics for the study are given in the table below. Use this information to determine if there is significant evidence that weight gain of rats exposed to excessive noise at night is different on average than weight gain of rats in a quiet night environment. Excessive noise at night environment (Group 1) Quiet night environment (Group 2) Sample mean (grams) 22.4 19.9 Sample standard deviation (grams) 6.4 3.8 Observations/Sample size 69 58 Which of the following formulas would you use to calculate the test statistic? and calculate the test statistic to two decimal places (2dp). Test statistic =
Please answer (b) and (d)
Researchers studying the link between prenatal vitamin use and autism surveyed the mothers of a random sample of children with autism and children with typical development. The table below shows the number of mothers in each group who did and did not use prenatal vitamins during the three months before pregnancy (periconceptional period). Autism. No Autism Vitamins - Yes 143 Vitamins - No 111 159 70 Do we have sufficient evidence to conclude that the proportion of children with autism is different between women that used vitamins and women that did not if the type I error rate you are willing to tolerate is 5%? Not able to determine We should accept the null We should reject the null We should not reject the null
Please help with d e and g only

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS