Verified answers to MATH225 Week 8 Assignment Predictions Using Linear Regression available at $10
Question
Janet is studying the relationship between the average number of minutes spent exercising per day and math test scores and has collected the data shown in the table. The line of best fit for the data is yˆ=0.46x+66.4. Assume the line of best fit is significant and there is a strong linear relationship between the variables.
(a) According to the line of best fit, what would be the predicted test score for someone who spent 23 minutes exercising? Round your answer to two decimal places.
Provide your answer below:
The predicted test score is 76.98(correct answer)
Question
Janet is studying the relationship between the average number of minutes spent exercising per day and math test scores and has collected the data shown in the table. The line of best fit for the data is yˆ=0.46x+66.4.
(a) According to the line of best fit, the predicted test score for someone who spent 23 minutes exercising is 76.98.
(b) Is it reasonable to use this line of best fit to make the above prediction?
Select the correct answer below:
The estimate, a predicted test score of 76.98, is reliable and reasonable.
The estimate, a predicted test score of 76.98, is unreliable but reasonable.
The estimate, a predicted test score of 76.98, is unreliable and unreasonable.
The estimate, a predicted test score of 76.98, is reliable but unreasonable.
Ans: ___
(Complete answers available at $10)
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 is yˆ=0.16x+36.2. Assume the line of best fit is significant and there is a strong linear relationship between the variables
(a) According to the line of best fit, what would be the predicted number of minutes spent reading for someone who spent 67 minutes studying? Round your answer to two decimal places.
Ans____
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 is yˆ=0.16x+36.2.
) According to the line of best fit, the predicted number of minutes spent reading for someone who spent 67 minutes studying is 46.92.
(b) Is it reasonable to use this line of best fit to make the above prediction?
Select the answer below
The estimate, a predicted time of 46.92 minutes, is both reliable and reasonable.
The estimate, a predicted time of 46.92 minutes, is both unreliable and unreasonable.
The estimate, a predicted time of 46.92 minutes, is reliable but unreasonable.
The estimate, a predicted time of 46.92 minutes, is unreliable but reasonable.
Ans_____
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 is yˆ=−0.79x+98.8. Assume the line of best fit is significant and there is a strong linear relationship between the variables.
(a) According to the line of best fit, what would be the predicted number of minutes spent reading for a person who works 27 hours (per week)? Round your answer to two decimal places, as needed.
Ans:_____
You can also check out (Solution) MATH225 Week 8 Assignment Performing Linear Regressions with Technology
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 is yˆ=−0.79x+98.8.
(a) According to the line of best fit, the predicted number of minutes spent reading for a person who works 27 hours (per week) is 77.47.
(b) Is it reasonable to use this line of best fit to make the above prediction?
Select the correct answer below:
The estimate, a predicted time of 77.47 minutes, is unreliable but reasonable.
The estimate, a predicted time of 77.47 minutes, is reliable but unreasonable
The estimate, a predicted time of 77.47 minutes, is both unreliable and unreasonable.
The estimate, a predicted time of 77.47 minutes, is both reliable and reasonable.
Ans____
Solution
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