Mean and standard deviation Family A B CD E F G HIncome 44 43 47 46 48 46 49 45

We know that for the given data x1, x2, ..., xn Mean : μ=∑i=1nxin and Standard…

Answered: Family A B C D E F GH Income 44 43 47…

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter3: Functions And Graphs

Section3.3: Lines

Problem 16E

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LIFE SCIENCE APPLICATIONS Body Surface Area The surface area of a human in square meters has been approximated by A(h,m)=0.024265h0.3964m0.5378, where h is the height in cm and m is the mass in kg. Find A for the following data. Source: The Journal of Pediatrics. a. Height, 178cm; mass, 72kg b. Height, 140cm; mass 65kg c. Height, 160cm; mass, 70kg d. Using your mass and height, find your own surface area. e. f.
Running In 1987, Canadian Ben Johnson set a world record in the 100-m sprint.The record was later taken away when he was found to have used an anabolic steroid to enhance his performance. His speed at various times in the race is given in the following table . Source: Information Graphics. Timesec Speedmph 0 0 1.84 12.9 3.80 23.8 6.38 26.3 7.23 26.3 8.96 26.0 9.83 25.7 a. Use the information in the table and left endpoints to estimate the distance that Johnson ran in miles. You will first need to calculate t for each interval. At the end, you will need to divide by 3600 the number of seconds in an hour, since the speed is in miles per hour. b. Repeat part a, using right endpoints. c. Wait a minute, we know that the distance Johnson ran is 100m. Divide this by 1609, the number of meters in a mile, to find how far Johnson ran in miles. Is your answer from part a or part b closer to the true answer? Briefly explain why you think this answer should be more accurate. d.
Heart Disease In a certain country, the number of deaths due to heart disease decreased from 235 in one year to 221 in the next year. What percentage decrease in deaths due to heart disease does this represent?
OTHER APPLICATIONS Car Accidents The tables in the next columns give the death rates, per million person trips, for male and female drivers for various ages and number of passengers. Male Drivers Number of Passengers Age 0 1 2 3 16 2.61 4.39 6.29 9.08 17 1.63 2.77 4.61 6.92 30-59 0.92 0.75 0.62 0.54 Female Drivers Number of Passengers Age 0 1 2 3 16 1.38 1.72 1.94 3.31 17 1.26 1.48 2.82 2.28 30-59 0.41 0.33 0.27 0.40 a. Write a matrix for death rate of male drivers. b. Write a matrix for death rate of female drivers. c. Use the matrices from parts a and b to write a matrix showing the difference between the death rates of males and females. d. Analyze the results of part c and make some suggestions on how to reduce the rates.

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Family A B C D E F GH Income 44 43 47 46 48 46 49 45