People who experience online harassment either ignore itor respond via postings or involving authorities. Is onemethod more effective than the other? A 2014 PewResearch Center report, based on a random sample ofAmerican adults, found that 412 of the 549 respondentswho had chosen to ignore online harassment thought that itwas an effective way to deal with the issue. Of the 368respondents who had chosen to respond to onlineharassment, 305 thought that it had been effective. How large is the difference? Obtain and interpret in contexta 95% confidence interval for the difference between theproportions of American adults who find ignoring onlineharassment effective and those who find responding toit effective.Provide the lower and upper bounds of the 95% confidenceinterval. Give your answers to three decimal places.Lower bound =Upper bound=0.133Incorrect-0.024

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Answered: People who experience online harassment…

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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Some researchers investigate whether playing construction toys helps children to develop spatial intelligence. The study involved 153 randomly selected preschool children. Answer the following questions: i)What is the explanatory variable in this research? ii)What is the response variable in this research? iii)Is this relationship likely to be an association or causation? Explain your answer using a couple of sentences.
Fifty-five percent of people who move from an area without fire ants to an area with fire ants get stung within a month. Write a possible reason (hypothesis) for why newcomers are more likely to be stung
When writing the participant section for your formal report, you include only information that directly describes your participants, and do not include information on measures they have completed. True or false
An issue of Time Style and Design reported on a poll conducted on the shopping habits of wealthy Americans. A total of 603 interviews were conducted among a national sample of adults with household incomes of at least $150,000. Of the adults interviewed, 410 said they had purchased clothing, accessories or books online in the past year. We want to understand the percentage of wealthy Americans who shop online. Do the data provide sufficient evidence to say that the majority (more than 50%) of wealthy Americans shop online at the 5% significance level? a. What are n, x, n-x and ??̂? b. State the null and alternative hypotheses. c. What is the value for the test statistic z0? d. Find the p-value. e. Do the data support that (more than 50%) of wealthy Americans shop online?
Alcohol abuse has been described by college presidents as the number one problem on campus, and it is an important cause of death in young adults. How common is it? A survey of 10,904 randomly selected U.S. college students collected information on drinking behavior and alcohol-related problems. The researchers defined “frequent binge drinking” as having five or more drinks in a row three or more times in the past two weeks. According to this definition, 2486 students were classified as frequent binge drinkers. Construct and interpret a 99% confidence interval for the proportion of students who are classified as binge drinkers. (Use the four-step process and Table A to get your z* value.) Using the interval that you calculated in the last question, conclude in context for the question.
In a survey of families in which both parents work, one of the questions asked was, “Have you refused a job, promotion, or transfer because it would mean less time with your family?” A total of 200 men and 200 women were asked this question. “Yes” was the response given by 29% of the men and 24% of the women. Based on this survey, can we conclude that there is a difference in the proportion of men and women responding “yes” at the 0.05 level of significance?
A study in Boston schools questioned third graders to see if they felt stress in their school life. Out of 37 boys, 18 said they felt stress. While 16 out of 54 girls said they felt stress. Is this enough evidence to show that the boys and girls experience stress differently?
What would be your decision? A. Reject the null hypothesis. B. do not reject the null hypothesis. C. Check the alternative hypothesis. D. Where is an insufficient data to make a decision.
The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.
In this same passage, answer the third question to the problem.
Suppose we wish to compare the health status of two groups of people. What variables might we use to measure the status? What variables might we want to control in order to draw the appropriate inferences and why?
Can someone help me with this? Thanks!

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