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Enter your answers in the spaces provided. Save the file using your last name as the beginning of the file name (e.g., ruf_week8_exercises) and submit via "Assignments." When appropriate, show your work. You can do the work by hand, scan/take a digital picture, and attach that file with your work. 1. A researcher plans a study in which a crucial step is offering participants a food reward. It is important that the three food rewards be equal in appeal. Thus, a prestudy was designed in which participants were asked which of the rewards they preferred. Of the 60 participants, 16 preferred cupcakes, 26 preferred candy bars, and 18 favored dried apricots. Do these scores suggest that the different foods are differentially preferred by people in general? (Use the .05 significance level.) a. Use the five steps of hypothesis testing. b. Sketch the distribution involved. c. Explain your findings. 2. A high school principal wanted to know if the racial makeup of her teachers mirrored that of the student body. The student body broke down into 47% White, 28% Latino, 15% African American, and 10% other. Of the 65 teachers, 42 were White, 4 were Latino, 15 were African American, and 4 were Other. Do these results suggest that the racial makeup of the faculty members is different from that of the students? (Use the .05 significance level.) Use the five steps of hypothesis testing and explain your findings. 3. Please make up and discuss research examples corresponding to the various techniques introduced throughout this course. Describe a plausible study for each of the following statistical procedures, indicating how it would apply and what results you would predict. Also include information about the number of participants you would assess and how you would go about estimating effect size and statistical power (when relevant). a. correlation b. multiple regression c. t test for independent means d. t test for dependent means e. ANOVA f. chi square for goodness of fit g. chi-square test for independence
write a report on simple data analysis and comparison.explain briefly how simple data analysis methods you are to use
An alternative has a discounted project cost of $5,215,000 with no salvage value. The estimate was in constant dollars and the discounting used mid-year factors. While the period of analysis is 4 years, the alternative only provides benefits f..
State a research question for which a single-group post-test only design can yield relatively unambiguous findings.
question 1an airline was interested in measuring the length of time customers have to wait in the queue prior to
Which of the following is NOT a point estimate?
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
Locate the original poll, summarize the poling procedure (background on how information was gathered), the sample surveyed.
Find the probability that exactly 5 rats have recessive traits and find the probability that no more than 9 rats have recessive traits.
What is the unregulated competitive equilibrium and what is the social optimum specific tax (per unit of output of gunk) results in the social optimum
A certain disease is found in one person in 5000. If a person does have the disease, the test will show a positive result 93% of the time. If a person does not have the disease, the test in 1 out of 500 cases will give a false positive result..
q1.a soda producer makes and sells two products classic cola and diet cola. if this company spends x1 dollars on
q1. in a pure exchange economy with two goods g and h two traders amos and elise have cobb-douglas utility functions.
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