Researchers wanted to test the happiness score across 3 time-points   Happiness 1 Happiness 2 Happiness  3 22 38 42 31 40 50 20 32 43 23 33 37   Match each source of variability to the appropriate df    dfHappiness Answer 1 dfSubjects Answer 2 dfError (i.e., dfwithin) Answer 3 dfTotal Answer 4

A better explanation of ANOVA and correlation

A hospital administrator wants a statistic to calculate the relationship between the degree of patient satisfaction and whether that patient was treated in the ER or admitted to the hospital. one-sample t point-biserial correlation O independent-measures t sign test

Show work   Researchers conducting a study of 15 children with a diagnosis of ADHD wish to assess whether the BMI of the children is correlated with degrees of hyperactivity in the child. The BMI of the children is shown in the image. What is the Q3 value for BMI in the study? You should get the same answer regardless of whether you do it by hand or in Excel.

Is there any relationship between overall service quality provided to tourists, the value of money and the likelihood of a return to Hong Kong?

Use the attached table to answer the following: What is the dependent (response, outcome) variable?   What is the independent (explanatory) variable?   Describe the pattern of association between subjective class and satisfaction with financial situation.

We are interested in comparing the proportions of men and women who say earning a large salary is very important to them. You surveyed 200 men and 200 women and recorded their answers to the question as “yes” (earning a large salary is very important) or “no” (earning a large salary is not very important).     Yes No Total Men 150 50 200 Women 110 90 200 Total 260 140 400   Test the association between sex and the importance of earning a large salary using a z-test. Provide the null and alternative hypotheses, test statistic, p-value, and conclude test with 0.01 signifigance.

Which of the following would not be considered

A certain polymer is used for evacuation systems for aircraft. It is important that the polymer be resistant tothe aging process. Fifty specimens of the polymer were used in an experiment. Twenty‐five were assignedrandomly to be exposed to an accelerated batch aging process that involved exposure to high temperatures for10 days.  Question Which Treatment results in the higher mean tensile strength? (Circle One) Aging or No AgingWhich Treatment has the higher variability? (Circle One) Aging or No Aging