lie about the answers to SUlle quStIU B. Individuals C. The sampling frame does not include some members of the population. D. The wording of a question leads subjects to a particular type of response. Pick one and explain 5. Recently the Gallup Poll sought the opinions of American adults regarding U.S. government policies toward Cuba and on conditions in that island nation. For example, 60% of the 1,050 adults interviewed by Gallup said they favored re-establishing diplomatic relations with Cuba, while 30% author of the Gallup study wrote: "For results based on the total sample of national adults, one can say with 95% confidence that the margin of sampling error is 3 percentage points. same poll Gallup asked half of the respondents the following question: As you may know, Fidel Castro has resigned as president of Cuba. As a result, do you think that ó said they opposed the idea. In the report describing the survey methods used, the " In this the situation for people in Cuba will get better, stay the same, or get worse They asked the other half of the respondents the question with a slightly different wording: As you may know, Fidel Castro has resigned as president of Cuba. As a result, do you think that the situation for people in Cuba will get worse, stay the same, or get better? a. People often pick the first choice offered to them. Thus, by switching the order of the choices at the end of the question for half of the respondents, Gallup should be able to A. improve the reliability of the results. C. decrease the margin of error B. reduce the bias in the results increase the confidence level b. If Gallup had just reported the results for the 525 people who answered the first version of the question, then the margin of error they would have reported would be A. smaller than 3 percentage points C. B. still 3 percentage points D. changed since the population was cut in h bigger than 3 percentage points 16. The Pew Global Attitudes Survey asked adults in several countries if they were about global warming. In the United States, 53% of the respondents said t!

Suppose 500 people in the sample of 1,007 adults were women. Gallup asked these 500 women. "What is your favorite Summer Olympic event?" Thirty-five percent said swimming was their favorite. Gallup gave a margin of error for this result.  A) ....Plus or minus 3 percentage points just as for the overall poll B)...greater than plus or minus 3 points becuase the sample for this question is smaller C)...less than plus or minus 3 points because the population of swimming fans is smaller than the population of all adults D)...Less than plus or minus 3 points becuase the sample for this question is smaller

Determine if the survey question is biased. If the question is biased, suggest a better wording. How often do you eat vegetables during an average month? Is the question biased? OA. Yes, because it does not lead the respondent to any particular answer. A better question would be "Why is eating vegetables good for you?" OB. Yes, because it influences the respondent into thinking that eating vegetables is good for you. A better question would be "Do you think that eating vegetables is good for you?" OC. No, because it influences the respondent into thinking that eating vegetables is good for you. OD. No, because it does not lead the respondent to any particular answer.

1. Explain the difference between z-tests (which use categorical data), and t-tests (which use numerical data). 2. Conduct a t-test, both when given statistics, and when given data. 3. Conduct a t-test, 2-sample t-test, and paired t-test. 4. Differentiate between the five types of tests we have learned so far.

A survey asks the question, “With the recent recalls on their cars, would you consider buying a Volkswagon?” The most likely type of bias is:A.sampling B.measurement C.non-response D.response

A De Anza student decided to determine whether the percent of men who participate in sports at De Anza College is higher than the percent of women who participate in sports at De Anza College. Out of 67 women, 12 said they participate in sports. 13 of the 45 men surveyed said they participate in sports. a. ) What are the type I and type II errors? Explain them in the context of this problem.b. ) Describe the sample statistics in words. What is the distribution of the sample statistic? Explain why you used this distribution.Can someone please help me make sense of these questions?

Determine whether the following studies would best be completed using a sample or population: a. Determining the average weight of Labrador puppies. Select an answer b. Determining the average number of points per game for a famous basketball player. Select an answer c. Determining the average grade of one statistics class. Select an answer d. Determining the average number of eggs a salmon lays. Select an answer

11. The city council of Pine Bluffs is considering increasing the number of police in an effort to reduce crime. Before making a final decision, the council asks the Chief of Police to survey other cities of similar size to determine the relationship between the number of police and the number of crimes reported. The Chief gathered the following sample information. City Police Number of Crimes Oxford 15 17 Starkville 17 13 Danville 25 Athens 27 Holgate 17 Carey 12 21 Whistler 11 19 Woodville 22 6. a. If we want to estimate crimes based on the number of police, which variable is the dependent variable, and which is the independent variable? According to the regression output shown below: . reg y x Source df MS Number of obs - 8 F( 1, 6) - 19.49 Model 222.393634 1 222.393634 Prob > F 0.0045 Residual 68.4813665 6. 11.4135611 R-squared 0.7646 Adj R-squared - 0.7253 Total 290.875 7 41.5535714 Root MSE 3.3784 Coef. Std. Err. P>|t| [95% Conf. Interval] -.9596273 .2173962 -4.41 0.004 -1.491577…