Questions from spss or stat-101

Assignment Help Applied Statistics
Reference no: EM13528928

Question 1: Each of the following proportions is based on survey responses. For each proportion, use the ±2 rule of thumb to determine the 95 percent confidence interval.

A. When asked if they are satisfied with their financial situation, .29 said "very satisfied" (n = 121).

B. When asked if people can be trusted, .32 said "yes" (n = 100).

C. Of the individuals in a survey, .40 still live in the same city they lived in when they were 16 years of age (n = 225)


Question 2: . Scholars of political development have investigated the so-called oil curse, the idea that oil-rich countries tend not to develop democratic systems of governance) that "oil and democracy do not mix."17 Framing this idea in the form of a hypothesis: In a comparison of countries, those having economies less dependent on oil wealth will be more democratic than will countries having economies more dependent on oil wealth. Consider the following data, which present information for twenty countries with non-oil-dependent economies and fifteen countries with oil-dependent economies. The dependent variable is a 7-point level-of-democracy scale, with higher scores denoting more democracy. Here are the mean values and standard errors of the democracy scale for nonoil-dependent and oil-dependent countries:

Oil-dependent economy?             Mean democracy scale            Standard error

No                                                      4.7                                .51

YES                                                    2.6                                 .28


A. State the null hypothesis for the non-oil-dependent/oil-dependent comparison.

B. Calculate the difference between the means of the democracy scale for non-oil-dependent and oil-dependent countries, Calculate the standard error of the difference. Calculate the t-statistie.

C. Does the mean difference pass the 1.645 test of significance? Explain how you know.

D. Based on these results, suppose a researcher decides to reject the null- hypothesis. Is this decision supported by the statistical evidence? Explain.


Questions 3: Below are two conventional wisdoms, statements generally believed' to be accurate descriptions of the world. Accompanying each statement are data (from the 2008 General Social Survey) that allow. you to test each conventional wisdom, For each statement:

A. State the null hypothesis.

B. Calculate the difference between the proportions or means.

C. Calculate the standard' error of the difference in proportions or means.

D. Using the eyeball test, (I) state whether you would accept the null hypothesis or reject the null hypothesis and (ii) explain your reasoning. Conventional Wisdom ONE: Hispanics have larger families than non-Hispanics. The 2008

General Social Survey asked respondents how many children they have. Hispanic respondents had an average of 1.98 children (standard error =, 12), whereas non-Hispanics averaged 1.93 children (standard error = .04).

CONVENTIONAL 'WISDOM Two: Southerners are more likely than no southerners to own a gun.

According to the 2008 General Social Survey, .43 of southern respondents owned a gun (n =482), compared with .33 of nonsoutherners (n = 855).


Question 4: On December 18,2010, the U.S. Senate voted on the question of whether to repeal the don't ask don 't tell Policy (DADT) Regarding gays in the military. The relationship between party affiliation and vote IS shown-in the following table


Repeal DADT?                         Democrat                       Republican                 Total

No                                                0                            31                            31

Yes                                              55                            8                              63

Total                                            55                           39                             94

(Note: Two independents also voted yes. Four senators, one Democrat and three Republicans, did not vote.)

A.      Calculate chi-square for this table. Show your work. Draw a table just like the one above, leaving room in each cell to record these numbers: observed frequency fo), expected frequency fe),

Fo -fe(f0-fe)2 and (f0-fe)2/fe

B. Use chi-square to test the null hypothesis that, in the population from which the sample was drawn, there is no relationship between party and vote. Using Table 7-7) find the appropriate critical value (use the .05 level of significance). (i) Write down the critical value. (Ii) Should you reject the null hypothesis or not reject the null hypothesis? (iii) Explain your reasoning.

C.  Calculate lambda for this table. (i) Show your work. (il) Write a sentence explaining exactly what the value of lambda means. (iii) State whether the relationship is weak, moderate, moderately strong, or strong.


Question 5: The following table of raw frequencies can be 'used to test this hypothesis: In a comparison of individuals, people with lower levels of education will express stronger support for the death penalty than will people with higher levels of education.

                                                                                      Support for death penalty

Education                            High school or less                some college                      College or higher

Not Strong                              47                                            43                                       56

Strong                                   49                                            50                                       35

A.  Consider the way the table is arranged. If the hypothesis is correct, should we find a positive sign on Somers' dyx or a negative Signon Somers' dyx? Explain how you know.

B. Calculate Somers' dyx for this table. Show your work. On a sheet of paper, label three columns: Concordant pairs (C), Discordant pairs (D), and Tied pairs (Ty-Work your way through the table, recording and computing each concordant pair, discordant pair, and tied pair.

C. Examine the value of Somers' dyx that you calculated in B. Exactly what does this value tell you about your ability to predict death-penalty opinions using education as a predictive instrument?

D.State whether the relationship is weak, moderate, moderately strong, or strong.

Reference no: EM13528928

Previous Q& A

  Genotypes and flower colors of the two parent plants

In Mirabilis (Four-O’ clock plant), two genes, Y and R,affect flower colors. What are the genotypes and flower colors of the 2 parent plants?

  Color of petals is controlled by two genes by the pathway

What would be the the flower colors of B_D_, B_dd, bbD_ and bbddgenotypes? In a cross of BBDD x bbdd, what would the F2 progeny phenotypicratios be?

  In order to produce two identical daughter cells

In order to produce two identical daughter cells, the mother cell must accomplish three tasks. What are those three tasks and where in thecell cycle would they be accomplished?

  Unless injured liver cells rarelydivide

Unless injured liver cells rarelydivide. If you were examining liver cells, which place in the cellcycle would you expect to find the majority of cells?

  Determined which cell has undergone mitosis

You are looking at two cells that appear to be identical; however, one has undergone replication. How could it be determined which cell has undergone mitosis?

  A man with AB blood group marries woman with O blood group

A man with “AB” blood group marries a woman with“O” blood group.

  Stain on the bacterial smear too long-overstaining

what is the consequence of leaving a stain on the bacterial smear too long (overstaining)?  What evidence could be obtained just by observing the environment on a planet that would indicate life exists there?

  Most expect to find cells undergoing mitosis

In which of the following cell types would you most expect to find cells undergoing mitosis?

  Consider a coccus and a rod of equal volume

Which is more likely to survive in a dry enviroment?explain answer. which would be better adapted to a moist enviroment?

  B-adrenergic receptor and b-adrenergic receptor agonist

Provide an example (includestructures) of a b-adrenergic receptor agonist and a b-adrenergic receptor antagonist. Are the compounds useful clinically, whyor why not?


Write a Review


Similar Q& A

  Quantitative analysis for decision making class please

quantitative analysis for decision making class please write for each summarizing with highlights of the review items

  Keays et al 2003 conducted a correlational study to

keays et al. 2003 conducted a correlational study to determine the relationship between muscle strength and functional

  Calculate the regression equation

Calculate the regression equation for this data

  The population mean monthly service fee in dollar

The following data represent the monthly service fee in dollars if a customer's account falls below the minimum required $1,500 balance for a sample of 26 banks

  What is the total cost to produce the disks for the year

What is the total cost to produce the disks for the year? All workers will be fully utilized each quarter, in other words, there is no under utilization.

  Three approaches always result in the same conclusion

Will all three approaches always result in the same conclusion? Explain.

  Which data set has the lowest standard deviation

Create the second data set by inserting eight data points all very close to 10 on the number line and record the standard deviation of this data set, and then delete that data set.

  Question 1nbsp calculating a z-score and graphing a box

question 1nbsp calculating a z-score and graphing a box plotnbsplook at the data under dietarysupp.nbsp the table gives

  Decision making problems under uncertainty

1. What techniques are used to solve decision making problems under uncertainty? Which technique results is an optimistic decision? Which techniques results in pessimistic decision? Give examples of each.

  Hypothesis testing as of last year only 20 of the employees

ltbrgtas of last year only 20 of the employees in an organization used public transportation to commute to and from

  Rob report will be submitted to the faa

Rob rales is preparing a report that his employer will eventually deliver to the FFA. First, the report must be approved by both of his two supervisors. Each of these supervisors acts independently in the review of these reports. Supervisor A ..

  Quantitative analysis for management

Formulate a nonlinear program representing the profit maximization problem for the bakery - Formulate the goal programming representation of this problem, with the other three goals having priorities P2, P3, and P4, respectively.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd