A research poll included 1762 randomly selected adults who were asked whether "global warming is a problem that requires immediate government action." Results showed that 975 of those surveyed indicated that immediate government action is required. A news reporter wants to determine whether these survey results constitute strong evidence that the majority (more than 50%) of people believe that immediate government action is required. Complete parts (a) through (c) below.---a. What is the best estimate of the proportion of adults who believe that immediate government action is required?The best estimate is [ ](Round to three decimal places as needed.)

Answered: . What is the best estimate of the…

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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17
In applying statistics, we make decisions with less than 100% certainty (We are not always correct in our conclusion). False O True
If Ashley wants to test for GPA differences among first-, second-, third-, and fourth-year college students, which of these difference tests should she use? A. chi-square test of independence B. between-subjects, two-way ANOVA C. between-subjects, one-way ANOVA D. repeated-measures ANOVA
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.
You are being consulted by a level 400 psychology student on her final project. Her work entails estimating the proportion of students in University of Ghana who are claustrophobic i.e. having an extreme or irrational fear of confined places. a) What is the population in her case?
1. What measures of disease frequency are you going to compute? 2. What is the risk/odds of getting colon cancer among people having a high fat diet? 3. What relative measures are you going to compute? 4. Compute for the relative measures between colon cancer and high fat diet 5. Is vitamin use a risk factor for colon cancer? 6. What is the risk/odds ratio of the vitamin use and colon cancer? 7. Is vitamin use associated with high fat diet? 8. What is the risk/odds ratio of the vitamin use and high fat diet? 9. Is vitamin use confounder or effect modifier? COMPUTE FOR RETROSPECTIVE COHORT AND PROSPECTIVE COHORT
1. μ = 450, o = 25, n = 81 What mean would put 10% of the sample below it?
What statistical analysis could be used to determine whether the unsuccessful dieters attained a significantly different percentage from their weight-loss goal, on average, than did the successful dieters? single-sample t test In which of the following four categories does this situation fall? a. only scale variables b. nominal independent variables, scale dependent variable c. only nominal variables d. any ordinal variables (that cannot be treated as nominal)
An article reports that blue eyed people earn less than brown eyed people, with these numbers: average blue-eyed salary 35,000, average brown-eyed salary $37,000, p-value 0.45. Based on that reported p-value, and using the common definition of statistical significance, "which is the case? A. The results are nowhere near to being statistically significant. B. The results are almost but not quite statistically significant. C. The results are just barely statistically significant. D. The results are strongly statistically significant.
"Which of the following best describes a sample in statistics? A) The entire group of individuals or instances about whom we hope to learn B) A subset of the population used to represent the entire group C) The variable being measured in a study D) The procedure used to collect data"
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4) What do you infer from the odds ratio about the relationship between smoking and lung cancer?

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