What is the purpose, scope, and nature of the three types of…

What is the purpose, scope, and nature of the three types of theories (i.e., grand, middle-range, and practice)? Provide an example theory for each type.  Which type of theory is best suited to guide nursing research and why? What is the difference between a borrowed theory and nursing theory?

The purpose of this study was to quantify relationships betw…

The purpose of this study was to quantify relationships between academic achievement (GPA) and nutrition. Students completed a Likert-type dietary survey. The survey was designed to capture the amounts/types of foods consumed and numerically qualify the dietary components. Then the results were statistically compared to GPA. Using the table below identify all reported measures that had a statistically significant relationship with  GPA. (Full points will be awarded if you correctly list each statistically significant variable. 1 point will be deducted for each variable listed that was not statistically significant.) Total score is considered a variable.  Variable Test statistic P-value Total score 0.017 0.030 Vegetables  0.040 0.011 Fruits 0.050 0.029 Meats -0.048 0.242 Non-meat protein 0.075 0.061 Breads and cereals 0.055 0.049 Dairy 0.024 0.466 Water 0.196 0.041 Spreads and sauces -0.149 0.486