1.When examining differences between proportions, it is appropriate to use which approach todefining the standard error of the sampling distribution?A) both approaches are appropriateB) the pooled-variances approachC) neither approach is appropriateD) the separate-variances approach2. 10. A police department is implementing a new initiative in different high crime areasthroughout the city—they will be assigning an officer to walk the area for one month. I havebeen asked to assess whether the strategy was effective in reducing calls for police service. I aminteresting in the number of calls for service in a specific location before an officer was assignedto walk the area and after an officer was assigned to walk the area. What type of statisticaltechnique would I use?A) T-test for independent samplesB) F-testC) T-test for dependent samplesD) There is no way to make the comparison.E) Chi-square test of independence3.Typically, when using a t-test to compare means, what level of measurement is the independentvariable?A) OrdinalB) IntervalC) NominalD) Ratio4.When the samples are relatively large or are evenly divided, the estimates of the standard errorusing the pooled-variances and separate-variances approaches will be _____.A) Exactly equalB) SimilarC) Statistically significantD) Dissimilar5.Why can we use a normal sampling distribution to test hypotheses involving proportions?A) because the mean and standard deviation are appropriate statistics to use with proportionsB) because as N increases the sampling distribution of a proportion approximates a normal curveC) because proportions are ratio-level measuresD) all the answers given6.I am getting ready to calculate and independent sample t-test. I have assumed homoscedasticity.What am I assuming?A) That I fail to reject the null hypothesis.B) That the standard deviations of the two groups are not equalC) That the standard deviations of the two groups are equalD) That I reject the null hypothesis.7.A two-sample t-test…A) compares two samples to one anotherB) compares a sample to a known populationC) compares apples and orangesD) compares a sample to an unknown population8.I have completed an F-test and rejected the null hypothesis. What does this mean?A) I can reject the null hypothesis of no difference between two independent means.B) I can assume homoscedasticity.C) I cannot assume homoscedasticity.D) I can use the pooled variance estimate of t.9.The null hypothesis for a difference of means test is generally what?A) that there are no meansB) that the means are the sameC) that the means are not the sameD) none of the choices given10.The assumption that population distributions have equal standard deviations is known as what?A) homoscedasticityB) multicolinearityC) discordancyD) heteroscedasticity11.One of the requirements of the two-sample t-test is that the samples examined be what?A) proportionateB) independentC) equalD) representative12.To perform a t-test comparing means, what “minimal†level of measurement must yourdependent variable be?A) IntervalB) NominalC) RatioD) Ordinal13.A “dependent samples T Test” is used for what type of two samples? (Select all that apply)A) Control and treatmentB) MatchedC) Independent14.The pooled-variance approach to calculating the standard error assumes that the populationdistributions have _____ variances.A) largeB) smallC) unequalD) equal
We Write Essays for Students
Tell us about your assignment and we will find the best writer for your paper
Get Help Now!The post 1.When examining differences between proportions, it is appropriate to use which appeared first on Infinite Essays.
Welcome to originalessaywriters.com, our friendly and experienced essay writers are available 24/7 to complete all your assignments. We offer high-quality academic essays written from scratch to guarantee top grades to all students. All our papers are 100% plagiarism-free and come with a plagiarism report, upon request
Tell Us “Write My Essay for Me” and Relax! You will get an original essay well before your submission deadline.
