3. Fr each of the following state the appropriate test (specify the hypothesis test or correlation) and justify why you selected that test. NOTE: this means ANY hypothesis test or correlation covered this semester. a. A researcher is interested in whether there's a difference between three types of fertilizers on plant growth. She treats her garden with each type and measures the growth after six weeks. b. A researcher evaluates the average SAT scores for a sample of 10“ graders compared to the general population (µ = 1059, = 120). th %3D c. A psychologist examines whether there is a relationship between gender and annual salary. d. A researcher evaluates the relationship between height (in inches) and weight (in pounds). e. A researcher measures implicit bias amongst a sample of college students in New York City compared to a separate sample of college students in Upstate New York. f. A psychologist is curious if there is a link between personality type (A or B) and political party (democrat or republican)

A random sample of 15 families representing three social classes has been observed for the frequency with which the parents administer physical punishment to the children over a period of a week. Are the differences significant? Use the five-step model as a guide and write a sentence or two of interpretation for your results.         Working Class    Middle Class    Upper Class    10    11    7    9    10    5    4    5    2    2    2    0    1    0    0

Micah is interested in testing whether college students' levels of gratitude change over the course of the semester. He randomly selects a sample of 100 students and assesses their levels of gratitude at the beginning, and end of the semester.   Question 17 options:   ANOVA   Paired samples t test   Independent samples t test   Correlation

Provide an appropriate response. Suppose you were to collect data for the pair of given variables in order to make a scatterplot. For the variables time spent on homework and exam grade, which is more naturally the response variable and which is the explanatory variable? O Time spent on homework: response variable Exam grade: explanatory variable O Time spent on homework: explanatory variable Exam grade: response variable

Which of the following would not be considered

estion 4 of 16 The number of text messages sent and the number of phone calls made in a sample of 100 students Identify the explanatory variable and the response variable, if possible O Either variable could be the explanatory variable because cach one could be used to predict or explain the other. O Explanatory variable: students; response variable: number of phone calls made O Explanatory variable: number of phone calls; response variable: number of text messages O Explanatory variable: number of text messages; response variable: number of phone calls O Explanatory variable: students: response variable: number of text messages DELL

Mr Alsup asked the studentS in his third-and sixth-period English classes whether they had chosen a topic for thier writing assignment. he recorded the data in a two-way table, as shown below English class   Yes  No  Total Third period 24 6 30 Sixth period  22 3 25 Total 46 9 55   if jannette in in mr alsup sixth-period english class what is the probablity that she has not chosen a topic for her writing assignment? a- 3% b- 5% c- 12% d-14%

Dr. Erie, a researcher at the Moore County Botany Institute, reported the following correlations. The correlation between pH level of soil and tomato weight is r₁ = -0.4. The correlation between hours of sunlight and tomato weight is r2 = 0.1. According to this information, which of the following statements are true? Select all that apply. Larger tomatoes result from more daily hours of sunlight. Larger tomatoes result from higher soil pH level. Tomato size is related more strongly to hours of sunlight than to soil pH level. None of these are true.

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