In 2002, the General Social Survey conducted by StatsSA, participants was asked the following questions: 1. Do you favour or oppose the death penalty for persons convictedof murder? 2. Do you think the use of marijuana should be made legal or not? If you want to know if there is a relationship between death penalty and marijuana beliefs, whathypotheses should you test? Define the null hypothesis and the alternative hypothesis.O A. H1: Marijuana Beliefs and death penalty are independent vs HO: No relationship exists between Marijuana Beliefs and death penaltyO B. H1: Marijuana Beliefs and death penalty are independent vs HO: Marijuana Beliefs is dependent on death penaltyO C. HO: Marijuana Beliefs and death penalty are independent vs H1: A relationship exists between Marijuana Beliefs and death penaltyO D. HO: A relationship exists between Marijuana Beliefs and death penalty vs H1: No relationship exists between Marijuana Beliefs and death penalty

Test is that whether there is a relationship between death penalty and marjuana beliefs.

Answered: In 2002, the General Social Survey…

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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2. Which source of bias is most relevant to the following situation: A survey ask the following: Should the death penalty be permitted if innocent people might die?
A radio news story claimed that half of all U.S. adults have Internet access. In a national poll about Internet usage (The Pew Internet Project), 12,638 U.S. adults were surveyed and it was found that 6413 of those surveyed had Internet access. At a 5% level of significance, perform a hypothesis test to test the claim made by the radio news story. The correct conclusion is: Group of answer choices half of all U.S. adults have Internet access. less than half of all U.S. adults have Internet access. The percentage of U.S. adults that have Internet access is not one-half. more than half of all U.S. adults have Internet access.
The Terri Schiavo Case. In the early part of 2005, the Terri Schiavo case received national attention as her husband sought to have life support removed, and her parents sought to maintain that life support. The courts allowed the life support to be removed, and her death ensued. A Harris Poll of 1010 U.S. adults was taken by telephone on April 21, 2005, to determine how common it is for life support systems to be removed. Those questioned in the sample were asked: (1) Has one of your parents, a close friend, or a family member died in the last 10 years? (2) Before (this death/these deaths) happened, was this person/were any of these people, kept alive by any support system? (3) Did this person die while on a life support system, or had it been withdrawn? Respondents were also asked questions about age, sex, race, education, region, and household income to ensure that results represented a cross section of U.S. adults. a. What kind of sampling design was used in this survey? Explain…
A dentist wants to a conduct a survey via telephone to determine what percent of all adults in their city floss daily. Which of these is the best example of response bias? Some people might not answer their phone after repeated calls. People with unlisted phone numbers or people with cell phones might be left out of the sample. Some people might refuse to tell a stranger on the phone about their flossing habits. Some people might feel pressured to say they floss even though they don’t.
Consider the hypothetical study described below. Based solely on the information given, do you have reason to question the results of the study? Select all that apply. Sociologists studying domestic violence circulate a questionnaire asking each respondent if she or he has ever abused a spouse or partner. a. Yes, there is reason. The people receiving the questionnaire might not be representative of the population. b. No, there is no reason. It is unlikely that there are any confounding variables in the study c. No, there is no reason. The goal of the study is clear. d. Yes, there is reason. Self-reporting is often not accurate. e. No, there is no reason. There is no bias in the study 1. Yes, there is reason. The wording of the question might produce inaccurate or dishonest responses,
Gallup conducted a survey of 1,015 randomly selected U.S. adults about "Black Friday" shopping. They asked the following question: "As you know, the Friday after Thanksgiving is one of the biggest shopping days of the year. Looking ahead, do you personally plan on shopping on the Friday after Thanksgiving, or not?" Of the 515 men who responded, 16% said "Yes." Of the 500 women who responded, 20% said "Yes." The standard error of the differences in proportions (PM - Pw) is about SE = 0.025. Use the normal distribution to test, at the 5% level, if the proportions of men and women who planned to shop on the Friday after Thanksgiving are significantly different. The sample size is large enough to use the normal distribution. Z= i p-value = i There is ✓evidence that the proportion of men and women who planned to shop the Friday after Thanksgiving are significantly different.
3. Today, in a random sample of 30 people, Trump received an approval rating of 30% world- wide. On his last day in office, Trump had an approval rating of 22% world-wide. Using a hypothesis test, is his approval rating getting better?
Your statistics instructor claims that 60 percent of the students who take her Elementary Statistics class go through life feeling more enriched. For some reason that she can't quite figure out, most people don't believe her. You decide to check this out on your own. You randomly survey 64 of her past Elementary Statistics students and find that 36 feel more enriched as a result of her class. Now, what do you think? Conduct a hypothesis test at the 5% level. a. What is the test statistic? b. What is the p-value? (Round your answer to four decimal places.) c. Construct a 95% confidence interval for the true proportion. Sketch the graph of the situation. Label the point estimate and the lower and upper bounds of the confidence interval. (Round your answers to four decimal places.)
What would be your decision? A. There is insufficient data to make a decision. B. do not reject the null hypothesis. C. Reject the null hypothesis. D. Reject the alternative hypothesis.
In 2014, Scotland was considering independence from England, going so far as to take a referendum vote. One opinion poll taken at the time showed that 51% of Scots favored "independence." In another poll taken at that same time, only 34% favored being "separate" from England. The primary reason these results differed by so much is that a. samples will usually differ just by chance due to random sampling. b. the wording of questions has a big effect on poll results. c. more follow-up efforts reduced the nonresponse rate of the second poll. d. the sample sizes are different, so the margins of error are different.
The Question for this is: How do Best Rest customers feel about purchasing a mattress online? I guess I just need help figuring out how I would tackle this problem using this data set (this is not all the numbers in the set), should i use a hypothesis test or correlation test, etc.?
Teacher Salaries. Data on salaries in the public school system are published annually in Ranking of the States and Estimates of School Statistics by the National Education Association. The mean annual salary of (public) classroom teachers is $55.4 thousand. A hypothesis test is to be performed to decide whether the mean annual salary of classroom teachers in Ohio is greater than the national mean. a. determine the null hypothesis. b. determine the alternative hypothesis. c. classify the hypothesis test as two tailed, left tailed, or right tailed.

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