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Part (a) For each age group, pick the midpoint of the interval for the x value. (For the 80+group, use 85. Enter exact numbers as integers, fractions, or decimals.) Midpoint 19.5 32 54.5 74.5 85 Part (b) Part (c) Part (d) Age Number of Driver Deaths per 100,000 17.5 38 22 36 29.5 24 44.5 20 64.5 18 80 28 Age group 15-24 25-39 40-69 70-79 80+ Find the correlation coefficient r. (Round your answer to four decimal places.) r=0.5788 x Is it significant? Yes No Part (e) Predict the number of deaths for age 35. (Use your equation from part (c). Round your answer to one decimal place.) 27.91 deaths per 100,000 ⒸPart (1) Predict the number of deaths for age 73. (Use your equation from part (c). Round your answer to one decimal place.) 24.1 xdeaths per 100,000 Part (g) What is the slope of the least squares (best-fit) line? (Round your answer to three decimal places.)

Part (a) For each age group, pick the midpoint of the interval for the x value. (For the 80+group, use 85. Enter exact numbers as integers, fractions, or decimals.) Midpoint 19.5 32 54.5 74.5 85 Part (b) Part (c) Part (d) Age Number of Driver Deaths per 100,000 17.5 38 22 36 29.5 24 44.5 20 64.5 18 80 28 Age group 15-24 25-39 40-69 70-79 80+ Find the correlation coefficient r. (Round your answer to four decimal places.) r=0.5788 x Is it significant? Yes No Part (e) Predict the number of deaths for age 35. (Use your equation from part (c). Round your answer to one decimal place.) 27.91 deaths per 100,000 ⒸPart (1) Predict the number of deaths for age 73. (Use your equation from part (c). Round your answer to one decimal place.) 24.1 xdeaths per 100,000 Part (g) What is the slope of the least squares (best-fit) line? (Round your answer to three decimal places.)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Part (a) Part (b) Part (c) Part (d) For each age group, pick the midpoint of the interval for the x value. (For the 80+ group, use 85. Enter exact numbers as integers, fractions, or decimals.) Midpoint 19.5 32 Age 17.5 22 29.5 44.5 64.5 80 Is it significant? Yes ● No Age group 15-24 25-39 40-69 70-79 80+ Number of Driver Deaths per 100,000 38 36 24 20 18 28 Find the correlation coefficient r. (Round your answer to four decimal places.) r=0.5788 x + Part (f) 54.5 74.5 85 Part (e) Predict the number of deaths for age 35. (Use your equation from part (c). Round your answer to one decimal place.) deaths per 100,000 27.91 Predict the number of deaths for age 73. (Use your equation from part (c). Round your answer to one decimal place.) 24.1 xdeaths per 100,000 Part (g) What is the slope of the least squares (best-fit) line? (Round your answer to three decimal places.)
Transcribed Image Text:Part (a) Part (b) Part (c) Part (d) For each age group, pick the midpoint of the interval for the x value. (For the 80+ group, use 85. Enter exact numbers as integers, fractions, or decimals.) Midpoint 19.5 32 Age 17.5 22 29.5 44.5 64.5 80 Is it significant? Yes ● No Age group 15-24 25-39 40-69 70-79 80+ Number of Driver Deaths per 100,000 38 36 24 20 18 28 Find the correlation coefficient r. (Round your answer to four decimal places.) r=0.5788 x + Part (f) 54.5 74.5 85 Part (e) Predict the number of deaths for age 35. (Use your equation from part (c). Round your answer to one decimal place.) deaths per 100,000 27.91 Predict the number of deaths for age 73. (Use your equation from part (c). Round your answer to one decimal place.) 24.1 xdeaths per 100,000 Part (g) What is the slope of the least squares (best-fit) line? (Round your answer to three decimal places.)
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