The authors of a research article were interested in the effect of watching movies that portrayed female heroines in roles that focus on their sex appeal on female viewers. They carried out anexperiment in which female college students were assigned at random to one of two experimental groups. The 22 women in one group watched 13 minutes of scenes from a certain superherofilm series and then responded to a questionnaire designed to measure body esteem. Lower scores on this measure correspond to lower body satisfaction. The 26 women in the other group(the control group) did not watch any video prior to responding to the questionnaire measuring body esteem. For the women who watched a certain superhero video, the mean body esteemscore was 4.42 and the standard deviation was 1.02. For the women in the control group, the mean body esteem score was 5.06 and the standard deviation was 0.99. You may assume thatthe distribution of body esteem scores for each of the two treatments (video and control) is approximately normal.USE SALT(a) Construct a 90% confidence interval for the difference in mean body esteem score for the video treatment and the no video treatment. (Use videotwo decimal places.)"no video*Round your answers toInterpret the interval.O There is a 90% chance that the true difference in mean body esteem score for the video treatment and the no video treatment falls directly in the middle of this interval.There is a 90% chance that the difference in mean body esteem score in this experiment for the video treatment and the no video treatment falls within this interval.O There is a 90% chance that the difference in mean body esteem score in this experiment for the video treatment and the no video treatment falls directly in the middle of thisinterval.(b) Do you think that watching the video has an effect on body esteem? Explain.The confidence interval ---Select---O We are 90% confident that the difference in mean body esteem score in this experiment for the video treatment and the no video treatment falls within this interval.O We are 90% confident that the true difference in mean body esteem score for the video treatment and the no video treatment falls within this interval.to conclude that watching the video has an effect on mean body esteem score because zero ---Select--- included in the confidence interval.

In this research study, the authors investigate the impact of watching movies featuring female…

Answered: - (a) Construct a 90% confidence…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Use the figure below to answer the questions that follow. The figure shows the results of a recent Marist poll asking about President Biden’s approval rating. The range of the confidence interval for these data points is 4.3%. For example, the first row shows that among all adults in the nations, 42% approve of Biden’s work. This means that confidence intervals for this result would be approximately (38, 46). ** see image attached The figure shows that people with less income are more likely to approve of Biden’s work than people with higher income. Is this result statistically significant given the width of the confidence interval? Explain. 2. The figure shows that people with more education are more likely to approve of Biden’s work than people with less education. Is this result statistically significant given the width of the confidence interval? Explain.
For a confidence level of 99% with a sample size of 22, find the t-score. Did not see how to work this ind of problem in either my textbook or the lecture video of my statistics class. Can you please show me how to work this out so I know how to do it. Thanks
Help on part 2
Empathy among police officers influences how they interact with citizens and the likelihood that they receive complaints. Gender differences in levels of empathy in the general population are not large but male and female officers have been shown to have different interaction styles with the public; this may be due to the different empathy levels. After sampling officers and measuring their levels of empathy you find the following data. Males Females n = 6 n = 9 M = 31 M = 45 SS = 490 SS = 680 If you were going to make gender comparisons like this, which option would be the correct choice? Write A or B in the box. [a] Option A. Independent-measures t-test Option B. Repeated-measures t-test
What is the lower endpoint of a 95% confidence interval for the percent of students who like online classes if for a sample of 134 students 92 students liked online classes? C e M AD ►
The figure to the right shows the results of a survey in which 2000 college graduates from the year 2016 were asked questions about employment. Employment College students' responses to questions about employment Construct 95% confidence intervals for the population proportion of college students who gave each response. Expect to stay at first employer for 3 or more years 70% 67% Completed an apprenticeship or intemship 62% Employed in field of study Feel underemployed 54% Prefer to work for a large company 17% The 95% confidence interval for the proportion of college students that expect to stay at their first employer for 3 or more years is (Round to three decimal places as needed.)
The figure to the right shows the results of a survey in which 1500 college graduates from the year 2016 were asked questions about employment. Employment College students' responses to questions about employment Construct 99% confidence intervals for the population proportion of college students who gave each response. Expect to stay at first employer for 3 or more years 73% Completed an appranticeship or intemship 67% Emplayed in field of study 61% Feel underemployad 53% Prefer to work for a large company 17% stay at their first émployer for 3 or more years is (0.700,0.760 ). The 99% confidence interval for the proportion of college students that expect (Round to three decimal places as needed.) The 99% confidence interval for the proportion of college students that have completed an apprenticeship or internship is ( ! ) (Round to three decimal places as needed.)
Where did they get the 0.21 from? Please explain
Z-score for an 88% confidence level
Describe about the INTERPRETATION OF A CONFIDENCE INTERVAL.
Describe how a Confidence Interval might be a better piece of information to report from a study than a hypothesis test.
A Gallup poll of 1001 Americans age 18 and over conducted in May of 2013 found that 80% of the respondents "strongly agree" that K- 12 schools should teach critical thinking to children. Write a meaningful sentence interpreting your interval. We are 95% confident that the true percentage of all adult Americans who "strongly agree" that K-12 schools should teach children critical thinking is between 76.8% and 83.2%. We are 95% confident that the true percentage of the 1001 Americans who "strongly agree" that K-12 schools should teach children critical thinking is between 76.8% and 83.2%. We are 95% confident that the true percentage of all Americans who "strongly agree" that K-12 schools should teach children critical thinking is 80%. We are 95% confident that the true percentage of the 1001 Americans who "strongly agree" that K-12 schools should teach children critical thinking is 80%.

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