SPRING2017 MATH1680,150 MWF Quiz: CH4 Quiz This Quiz: 14 pts possible This Quest
ID: 3172764 • Letter: S
Question
SPRING2017 MATH1680,150 MWF Quiz: CH4 Quiz This Quiz: 14 pts possible This Question: 1 pt 1 of 14 (8 complete) v is Question Help The data the table number of licensed drivers in various age groups and the number of fatal accidents within the age group by gender. in represent the Complete parts (a) through below. Click the icon to view the data table. the line for treating the number cflicensed the explanatory variable, xe and the number of fatal crashes, y, drivers as as the response variable. Repeat this procedure for females. Find the least-squares regression line for males. 0.3418 x 1001.5 places as needed. Round the constant to one decimal place as needed) (Round the x coefficient to four decimal Find the least-squares regression line for females. y 0.1062 x 504.5 constant to one decimal place as needed.) company use this information? (Round the x coefficient to four decimal places as needed. Round the might an insurance the (b) Interpret the slope of the least-squares regression line for each gender, i appropriate. How below if necessary, f in What is correct interpretation of the slope of the regression line males? Select the correct choice and least-squares for answer the complete see the answer from part a to find this answer.) increases by 03416, on average e A If he number of male licensed drivers increases by 1 (thousand. then the number of fatal crashes by m,on average O B. If the average age all male licensed drivers increases by 1, then the number of fatal crashes increases on average. of increases by thousand, O c. If the number of fatal crashes increases by 1, then the number of male licensed drivers click to select your answer(s).Explanation / Answer
The slope of the regression line for males is greater than that for females.
This means that males tend to be involved in more fatal crashes than females.
An insurance company may use this information to argue for increasing the premium for males than the females
(c)
The number of fatal accidents for 16 to 20 years old males was 5180
The number of fatal accidents for 21 to 24 years old males was 5016
The number of fatal accidents for males greater than 74 years old was 2022
Does the same relationship hold for females?
Yes
Because, the slope is positive for both males and females. This means that there is a positive correlation between the number of licensed drivers and the number of fatal accidents in both the genders. Hence, the relationship between these two variables are same for both the genders.
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