A marketing professor at Givens College is interested in the relationship between hours spent studying and total points earned in a course. Data collected on 156 students who took the course last semester are provided in the fileMktHrsPts.

Click on the datafile logo to reference the data.

(a)Choose a scatter chart below with Hours Spent Studying as the independent variable.(i)

(ii)

(iii)

(iv)

- Select your answer -

Graph (i)

Graph (ii)

Graph (iii)

Graph (iv)

Item 1

What does the scatter chart indicate about the relationship between hours spent studying and total points earned?The scatter chart indicates there may be a- Select your answer -

positive

negative

Item 2

linear relationship between hours spent studying and total points earned. Students who spend more time studying generally earn more points, and this scatter chart is consistent with what is expected.(b)Develop an estimated regression equation showing how total points earned is related to hours spent studying. What is the estimated regression model?Letxrepresent the hours spent studying.If required, round your answers to three decimal places. For subtractive or negative numbers use a minus sign even if there is a + sign before the blank. (Example: -300)=+x(c)Test whether each of the regression parameters0and1is equal to zero at a 0.01 level of significance. What are the correct interpretations of the estimated regression parameters? Are these interpretations reasonable?The input in the box below will not be graded, but may be reviewed and considered by your instructor.

(d)How much of the variation in the sample values of total point earned does the model you estimated in part (b) explain?If required, round your answer to two decimal places.%(e)Mark Sweeney spent 95 hours studying. Use the regression model you estimated in part (b) to predict the total points Mark earned.If required, round your answer to the nearest whole number. Do not round intermediate calculations.$