A professor is interested in knowing if the number of absences a student has in the semester is a good indication of how well a student does on the final exam.At the end of the year, the professor compares absence rates and exam grades for eight students. The data she found are as follows.
Student Days Absent Final Exam Grade
A 8 77
B 3 84
C 9 71
D 10 73
E 9 70
F 5 80
G 6 79
H 2 88
What is the null hypothesis?
What is the research hypothesis?
Calculate the Pearson's correlation coefficient.
Calculate t.
Is your correlation statistically significant and, if so, at what level?
What are your conclusions about the null hypothesis?
Answer:
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What will be an ideal response?
In Sweden, the country's crime prevention strategy is ________ in scope and related policies are based on three premises
a. national c. specific b. local d. broad
A natural or adoptive parent may not voluntarily terminate parental rights.
Answer the following statement true (T) or false (F)
Representative surveys are:
a. national and statewide surveys that use a probability sampling procedure to ensure that the sample closely resembles the characteristics of the population. b. mailed out to a population at random. c. surveys wherein state representatives are the subjects. d. surveys that ask citizens about their perceptions of crime. e. none of the above.