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- A 2x2 experiment looks at how obesity and hunger affect the amount of food people eat. The results are shown below. n=10 participants per condition. Additional info if needed: N=40, G=120, ∑?2=640∑x2=640 please conduct a twoway ANOVA and draw conclusions about the main effects and interaction of obesity and hunger on food intake. Obesity (Factor B) B1 (Obese) B2 (normal weight) Hunger A1 (not hungry) M=4 SS=50 M=1 SS=30 Factor A A2 (hungry) M=5 SS=60 M=2 SS=40Determine the heteroscedasticity in a scatter plot?We often see players on the sidelines of a football game inhaling oxygen. Their coaches think this will speed their recovery. We might measure recovery from intense exertion as follows: Have a football player run 100 yards three times in quick succession. Then allow three minutes to rest before running 100 yards again. Time the final run. Two experiments to investigate the effect of inhaling oxygen during the rest period can be implemented. One of the experiments is to be a completely randomized design and the other is a matched pairs design in which each subject serves as his or her own control. Suppose you have twenty football players available as subjects. For both experiments, carry out the randomization of the twenty football players to treatments as required by the design. Use Table A to carry out the randomization in both a completely randomized comparative design and a matched pairs design. Starting at line 142, determine IDs for 10 football players from the first group.…
- A researcher has access to 100 participants for an independent sample design study, and she is hoping to achieve power = .80.What effect size will her data need to achieve to make that possible?A researcher wants to conduct an experimental study on the effect of learning strategies (cooperative and conventional) and learning interest (low, medium, and high) on learning outcomes. The total number of research samples is 90 students and each cell is 15 students. You determine the research data on the learning outcomes yourself. Interpret the results of the research data analysis.You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly larger than 50% at a level of significance of a = 0.10. According to your sample, 49 out of 92 potential voters prefer the Democratic candidate.
- Researchers notice that access to food may be related to later success in secondary education. Researchers formulate a hypothesis that says: teenagers are more likely to graduate high school in cities with more food banks per capita compared to cities that have fewer food banks per capita. They run a pilot study with n = 4 neighborhood blocks, sampled randomly across cities in the U.S. Here, x = number of food banks in the target city and y = number of high school graduates in a 4x4 block radius. The data are presented in the table below. What is the correlation between access to food banks (x) and high school graduation (y)? a) Calculate the sum of products b) Calculate Pearson’s rCompare What-If Analysis using Trial and Error and Goal Seek to the given scenario: Let's say a student is enrolled in an online class at a learning institution for a semester. His overall average grade stands at 43% in the course (Term Grade is 45%, Midterm Grade is 65%, Class Participation is 62% and Final Exam is 0%). Unfortunately, he missed his Final Exam and was given 0%. However, he has the opportunity to redo his Final Exam and needs at least an overall average of 60% to pass the course. How can you use Trial and Error and Goal Seek to find out what is the lowest grade he needs on the Final Exam to pass the class? Which method worked best for you and why?Does the test result Provide sufficient evidence that light alcohol consumption has a negative impact on the driving performance of a sleep deprived driver. Why or why not
- Q3 explain THREE (3) major issues in handling Big Data. Q4 (a) Discuss the steps in the Data Life Cycle. List down any FOUR (4) important issues that required when designing a simulation study. (b)Q3: grades and data literacy A statistics instructor wants to examine the relationship between first-year students' reported level of data literacy (Poor, Average, Good and Excellent) and their binned grade in the statistics course ENVS178 (51-70%, 71-80%, 81-90% and 91-100%). He surveys a random sample of students in Fall 2022 and runs a statistical test using software that produces the following output: CurrentDataLit Average Total Excellent Count Good Count Expected Count Standardized Residual Poor Expected Count Standardized Residual Count Expected Count Standardized Residual Count Expected Count Standardized Residual Count Expected Count 51-70 10 OF 6.1 1.6 1 2.0 -.7 7 11.3 -1.3 2 6 1.9 20 20.0 ENVS178bin 71-80 22 17.2 1.2 0 5.5 -2.3 25 32 31.8 .0 2 1.6 .3 56 56.0 81-90 31 32.5 -.3 13 10.4 .8 61 60.1 .1 1 3.0 -1.1 106 106.0 91-100 3 10.1 -2.2 7 3.2 2.1 22 18.7 .8 1 .9 .1 33 33.0 Total 66 66.0 21 21.0 122 122.0 6 6.0 215 215.0 a. What statistical software was used to produce the…Calcium is the most abundant mineral in the human body and has several important functions. Most of the body calcium is stored in the bones and teeth, where it functions to support their structure. Recommendations for calcium are provided in Dietary Reference Intakes, developed by the Institute of Medicine of the National Academy of Sciences. The recommended adequate intake (RAI) for calcium for adults (ages 19-50) is 1000 mg per day. A random sample of 18 adults with incomes below the poverty level gave the following calcium intakes:886 633 943 847 934 8411193 820 774 834 1050 10581192 975 1313 872 1079 809Assume the population standard deviation for daily calcium intake for adults with incomes below the poverty level is 188mg.At the 0.05 level of significance, does the data provided above provide evidence to suggest that the mean calcium intake of all adults with incomes below the poverty level is less than the RAI pf 1000mg per day? Step 1: Define the parameter & setup the…
