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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
How much of each product do you recommend be produced that you believe maximizes revenue? How much revenue would be made if they followed your recommendation?
1nbsp construct a two member sample from the population 1 3 5 7 without replacement and make a probability sampling
This variable represents the number of machine breakdowns during a day, based on this simulation run, what is the average number of breakdowns per day?
Decision Trees are graphic displays of the decision process. When do you feel it is appropriate to use decision trees?
How many free premium channels should the research director recommend for inclusion in the 3-For-All service ?
a. Calculate the costs associated with level production and chase production strategies.
What is the shape of the distribution of credit hours? Compute summary statistics and use StatCrunch to construct a histogram of the credit hour data. Include a short paragraph answering the question. - RSCH202 - Quantitative Data Analysis Assignme..
A paper company is interested in estimating the proportion of trees in a 500-acre forest with diameters exceeding 2 feet. The company selects 25 plots (100 feet by 100 feet) from the forest and utilizes the information from the 25 plots to help..
A researcher hypothesizes that people who listen to music via ear buds have greater hearing loss than those in the general population. On a standard hearing test, the mean (μ) is 24.75. Higher values indicate better hearing
What is the variance of the data?"
What is the probability in the sample?
i. truefalse1.nbsp a b if and only if b isin a and a isin b.2.nbsp a cap b ? c a ? b cap a ? c3.nbsp ac c nbsp
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