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# (Solved) MATH225 Week 8 Assignment Predictions Using Linear Regression

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Question

The table shows data collected on the relationship between the time spent studying per day and the time spent reading per day. The line of best fit for the data isÂ yË†=0.16x+36.2. Assume the line of best fit is significant and there is a strong linear relationship between the variables.

• According to the line of best fit, what would be the predicted number of minutes spent reading for someone who spent 67minutes studying? Round your answer to two decimal places.

Question

The table shows data collected on the relationship between the time spent studying per day and the time spent reading per day. The line of best fit for the data isÂ yË†=0.16x+36.2.

(a) According to the line of best fit, the predicted number of minutes spent reading for someone who spentÂ 67Â minutes studying isÂ 46.92.

(b) Is it reasonable to use this line of best fit to make the above prediction?

• The estimate, a predicted time ofÂ Â 46.92Â minutes,Â is both reliable and reasonable.
• The estimate, a predicted time ofÂ Â 46.92Â minutes, is both unreliable and unreasonable.
• The estimate, a predicted time ofÂ Â 46.92Â minutes, is reliable but unreasonable.
• The estimate, a predicted time ofÂ Â 46.92Â minutes, is unreliable but reasonable.

Question

Michelle is studying the relationship between the hours worked (per week) and time spent reading (per day) and has collected the data shown in the table. The line of best fit for the data isÂ yË†=âˆ’0.79x+98.8. Assume the line of best fit is significant and there is a strong linear relationship between the variables.

• According to the line of best fit, what would be the predicted number of minutes spent reading for a person who works 27hours (per week)? Round your answer to two decimal places, as needed.

Â QUESTION

Michelle is studying the relationship between the hours worked (per week) and time spent reading (per day) and has collected the data shown in the table. The line of best fit for the data isÂ yË†=âˆ’0.79x+98.8.

Â (a) According to the line of best fit, theÂ predicted number of minutes spent reading for a person who worksÂ 27Â hours (per week) isÂ 77.47.

(b) Is it reasonable to use this line of best fit to make the above prediction?