Historically, the percentage of U.S. residents who support stricker gun control laws has been 52%. In order to see if the support for strick gun control laws has decreased, a random sample of 1011 people was interviewed and found that 495 were in favor of stricker gun control laws a) Set up the null and alternative hypothesis in symbols. b) Calculate the sample proportion and of who support stricker gun control laws. c) Find the standard error of the proportion d) Find the value of z statistic. e) Find the P-value f) If the level of significance is 0.05, what is your conclusion about gun control support ( it remains same or changed)

A poll was conducted of 2538 Americans who were employed full time about the gender gap in pay. Half were men, and half were women. One question asked: “I believe men and women at my company are paid equally for equal work.” The number giving each response is shown below. Response:    Men         Women Agree            966           785 Disagree      263            361 Not sure       40             123 Part 1 of 3 (a)If a person who participated in the survey is selected at random, what is the probability that he or she disagreed? Write as a decimal rounded to two decimal places.     The probability that he or she disagreed is approximately

College Degree Recipients A survey of 800 recent degree recipients found that 158 received associate degrees; 451, bachelor degrees, 21 first-professional degrees; 154, master degrees; and 16, doctorates. Is there sufficient evidence to conclude that at least one of the proportions differs from a report which stated that 23.3% were associate degrees; 51.1%, bachelor degrees; 3%, first professional degrees; 20.6%, master degrees; and 2%, doctorates? Use =α0.10.

A study considered the question, "Are you a registered voter?" Accuracy of response was confirmed by a check of city voting records. Two methods of survey were used: a face-to-face interview and a telephone interview. A random sample of 89 people were asked the voter registration question face to face. Of those sampled, seventy-six respondents gave accurate answers (as verified by city records). Another random sample of 90 people were asked the same question during a telephone interview. Of those sampled, eighty-three respondents gave accurate answers. Assume the samples are representative of the general population. At the 95% level, do you detect any difference in the proportion of accurate responses from face-to-face interviews compared with the proportion of accurate responses from telephone interviews(Show your 2-Prop z Int confidence in interval notation and show your interpretation) I:76, n2=90,X2= 83, CiL = 6.95 89 O.1602 < P, -P2<0. 0236 yd borminoo 76 0.8539 s 83=…

Country Magazine reports that celebrity MySpace accounts have an average of 4 million friends. Celebologist Chuck Norris thinks that it's actually different than that. Norris randomly samples 43 celebrities on MySpace and finds an average of 3 million friends. Which is the best set of hypotheses to test Chuck Norris's claim?

A study considered the question, “Are you a registered voter?”  Accuracy of response was confirmed by a check of city voting records.  Two methods of survey were used:  a face-to-face interview and a telephone interview.  A random sample of 93 people were asked the voter registration question face-to-face.  Seventy-nine respondents gave accurate answers.  Another random sample of 83 people was asked the same question during a telephone interview.  Seventy-four respondents gave accurate answers.  Assume that the samples are representative of the general population.  Test the claim that there is a difference in the proportion of accurate responses from face-to-face compared with telephone interviews.  Use alpha=.05   What is the null hypothesis? What is the alternative hypothesis? What distribution are you using? What test are you running? What is your conclusion?

What is the name of this hypothesis test? A state employee wishes to see if there is a significant difference in the number of employees at the interchanges of three state toll roads. Can it be concluded that there is a significant difference in the average number of employees at each interchange? Pennsylvania Turnpike: 7, 14, 32, 19, 10, 11 Greensburg Bypass: 10, 1, 1, 0, 11, 1 Beaver Valley Expressway: 1, 12,1, 9, 1, 11 Two Independent Samples t Test Paired Samples t Test O One Sample z Test Two Proportion z Test Linear Regression t Test Two Proportion z Test O Chi-Square Test for Independence O ANOVA One Proportion z Test O One Samplet Test O Chi-Square Goodness of Fit Test

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Explain what the statements below mean:A)A Rasmussen Reports national survey of 1000 adult Americans found that 18% dreaded Valentine's Day. The margin of error for the survey was 4.5 percentage points with 95% confidence. B)A Gallup poll of 547 adults Americans employed full or part time asked, "Generally speaking, would you say your commute to work is - very stressful, somewhat stressful, not that stressful at all?" Gallup reported that 24% of American workers said that their commute was "very" or "somewhat" stressful. The margin of error was 4 percentage points with 95% confidence.

In the past, 74% of the tourists who visited Chattanooga went to see Rock City. The management of Rock City recently undertook an extensive promotional campaign. They are interested in determining whether the promotional campaign actually increased the proportion of tourists visiting Rock City. Which of the following is the correct set of hypotheses? Ho: p 0.74 Ha: ps 0.74 O Ho: Ps 0.74 Ha: p > 0.74