Need help with question A Many researchers in the field of education have identi

Question

Need help with question A Many researchers in the field of education have identified a strong relationship between a student's socio-economic status and their performance in school. Specifically, researchers believe that the more money a student's parent's make, the higher that student's GPA will be. To investigate whether this phenomenon holds true for current Kirksville High School students, a random sample of students from Kirksville High School was selected. For each student, the cumulative GPA (measured on a 4.0 scale) and annual parent's income (measured in $10,000) were recorded. The dataset, called highschooi.mpj can be found on Blackboard in the homework folder. a. Identify the population of interest. b. Identify the response and explanatory variables. c. How many observations are in the sample? d. NOT GRADED. Use MINITAB to create a scatterplot and confirm that the relationship between the explanatory variable and the response variable is linear so fitting the least squares regression line is appropriate here. You do not need to turn anything in for this problem. e. Using MINITAB, what is the value of the correlation coefficient? Report all decimal places given by MINITAB. f. Use MINITAB to obtain the value of the y-intercept of the least squares regression line. Report all decimal places given by MINITAB. g. If reasonable, interpret the value of y-intercept in the context of the If not reasonable, explain why. h. Use MINITAB to obtain the value of the slope of the least squares regression line. Report all decimal places given by MINITAB. i. Interpret the value of the slope in the context of the problem.

Explanation / Answer

a) Population of interest is a random sample of students from kirksville High school.

b) Response variable is dependent variable which is in this case is GPA of students

Explanatory variable is independent variable which is in this case annual parents income.

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