What is the domain of the relation shown in the graph below? A. {-3, -2, 1, 3} B. {-4, -2, -1, 2, 4} C. {-4, -3, -2, -1, 1, 2, 3, 4} D. {-3, -2, -1, 2, 4}

After considering Mary's study into whether the learning of 6th graders on a math lesson is affected by background noise levels. Mary option of utilizing a repeated measures design for this study, as a repeated-measures study allows for the management of the sample size of the overall study which is one of the major benefits of the repeated-measures study, issues arise in the repeated-measures study due to the use of identical participants found in the group instead of conducting the study with differing samples to increase the variety of the sampling of students participating in the study (Gravetter & Wallnau, 2013). For the study the use of SPSS will allow Mary to select an ANOVA as a form of analysis for the effect of background noise levels on the 6th grade students when given a math lesson. Additionally, ANOVA does not require tabulated data sets as an input or for the data to be sorted for the completion of the analysis, particularly with the ONEWAY ANOVA analysis providing for seven different test statistics for posteriori analysis and the ability to run priori as a subprogram of the ONEWAY ANOVA analysis, and ANOVA permits Mary to acquire analyses of variance for factorial designs, tolerating up to five factors in each design. (Kim & Kohout, 1975).Response to the above question using 150-250 words and please use at least 1 reference. Please ensure there is also a reference page at the end and that the reference page is formatted in APA 6th edition format. Please also ensure that reference is listed in response properly.

The B&K Real Estate Company sells homes and is currently serving the Southeast region. It has recently expanded to cover the Northeast states. The B&K realtors are excited to now cover the entire East Coast and are working to prepare their southern agents to expand their reach to the Northeast.B&K has hired your company to analyze the Northeast home listing prices in order to give information to their agents about the mean listing price at 95% confidence. Your company offers two analysis packages: one based on a sample size of 100 listings, and another based on a sample size of 1,000 listings. Because there is an additional cost for data collection, your company charges more for the package with 1,000 listings than for the package with 100 listings.Sample size of 100 listings:95% confidence interval for the mean of the Northeast house listing price has a margin of error of $25,000Cost for service to B&K: $2,000Sample size of 1,000 listings:95% confidence interval for the mean of the Northeast house listing price has a margin of error of $5,000Cost for service to B&K: $10,000The B&K management team does not understand the tradeoff between confidence level, sample size, and margin of error. B&K would like you to come back with your recommendation of the sample size that would provide the sales agents with the best understanding of northeast home prices at the lowest cost for service to B&K.In other words, which option is preferable?Spending more on data collection and having a smaller margin of errorSpending less on data collection and having a larger margin of errorChoosing an option somewhere in the middleFor your initial post:Formulate a recommendation and write a confidence statement in the context of this scenario. For the purposes of writing your confidence statement, assume the sample mean house listing price is $310,000 for both packages. “I am [#] % confident the true mean . . . [in context].”Explain the factors that went into your recommendation, including a discussion of the margin of error