Homework Answers
slope coefficient for regular exercise=-1.9
answer:
The average glucose concentration is 1.9mg/dl lower among people who exercise regularly than among people people who do not exercise regularly.
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QUESTIONS A group of 65 people are randomly selected for a study. For each subject, researchers...
QUESTION 8 A group of 65 people are randomly selected for a study. For each subject,...
QUESTION 8 A group of 65 people are randomly selected for a study. For each subject, researchers collect information on glucose concentrations (mg/dL) and regular exercise (1 yes, Owno). Using regression analysis to regross glucose concentration on regular exercise, the results show that the regression coefficient is -1.9. What does this mean? 1. The average glucose concentration is 1.9 mg/dl. lower among people who exercise regularly than among people who do not exercise regularly 2. The average glucose concentration is...
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A student at a junior college conducted a survey of 20 randomly selected full-time students to determine the relation between the number of hours of video game playing each week, x, and grade-point average, y. She found that a linear relation exists between the two variables. The least squares regression line that describes this relation is ģ= -0.0564x + 2 9482 (a) Predict the grade-point average of a student who plays video games 8 hours per week. The predicted grade...
study was done to look at the relationship between number of movies people watch at the theater each year and the number of books that they read each year. The results of the survey are shown below. 26 Movics 4 9 4 0 1 3 Books 12 1 2 13 a. Find the correlation coefficient: r = Round to 2 decimal places. b. The null and alternative hypotheses for correlation are: Ho ? 0 H1? 0 Round to 4 decimal...
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