5.30 As reported in the chapter opener "USA and Its Automobiles," Americans are in love with the automobile -the majority have more than one vebi- cle per household. In fact, the national average is 2.28 vehicles per household. The number of vehicles per household in the United States can be described as follows: P(x) 0.34 E2 0.31 0.22 0.06 0.03 0.02 0.01 0.01 Vehicles, x 6 8 or more a. Replacing the category "8 or more" with exactly "8," find the mean and standard deviation of the number of vehicles per household in the United States. b. How does the mean calculated in part a correspond to the national average of 2.28? (continue on page 242) 23450O7

5.30 As reported in the chapter opener "USA and Its Automobiles," Americans are in love with the automobile -the majority have more than one vebi- cle per household. In fact, the national average is 2.28 vehicles per household. The number of vehicles per household in the United States can be described as follows: P(x) 0.34 E2 0.31 0.22 0.06 0.03 0.02 0.01 0.01 Vehicles, x 6 8 or more a. Replacing the category "8 or more" with exactly "8," find the mean and standard deviation of the number of vehicles per household in the United States. b. How does the mean calculated in part a correspond to the national average of 2.28? (continue on page 242) 23450O7

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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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令66%■ Joh Practice 8.7.04 Sab Practice 8.7.05 A student.desmos.com 2 Practice 8.7.05 Alexis Eichelberger 5 of 7 Next > Problem 3.2 16 Andre sets up a rain gauge to measure rainfall in his backyard. On Tuesday, it rains off and on all day. 14 • At 10 a.m., the gauge is empty. • Two hours later, the gauge has 2 centimeters of water in 12 it. 10 • At 4 p.m., he finds the gauge has 10 centimeters of water in it. • He accidentally knocks the gauge over and spills most of the water, leaving only 3 centimeters of water. • At 5 p.m., there is no change in the water level. 8. Label the axes in the table below. Include appropriate units in parentheses. 4. x-axis y-axis 10 11 12 1 2 3 4 6
Q. 8 What type of Index numbers are usually calculated?
27 120 104 6. 7. m%3D 27 5. h = j = 8. q %3D 153 67.5 104 O = k = 153 II
4.2
Statistics Question
Solve the following 1.) The following data were obtained in a study of the relationship between the weight and chest size ofinfants at birth. Weight (lbs) Chest Size (cm) 5.64 29.5 4.41 26.3 9.0 32.2 11.32 36.5 7.08 27.2 8.86 27.7 4.74 28.3 8.82 30.3 7.61 28.7 Ans: a.) r= + 0.77 b.) t = 3.193
Please answer number 8. Make sure to show work; thx!!
1. In AP Econ, the total points accrued thus far is 800. The instructor has announced that there will be a total of 1000 points at the end of the semester. The final exam, therefore, is worth 200 points. Christina L currently has an average score of 87%. Is it possible for Christina L to squeak by with an A- in the class? Explain. Show your work. Assume an 89.5% in the class is considered an A-.
For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.Santa Fe black-on-white is a type of pottery commonly found at archaeological excavations at a certain monument. At one excavation site a sample of 580 potsherds was found, of which 370 were identified as Santa Fe black-on-white. (a) Let p represent the proportion of Santa Fe black-on-white potsherds at the excavation site. Find a point estimate for p. (Round your answer to four decimal places.)(b) Find a 95% confidence interval for p. (Round your answers to three decimal places.) lower limit upper limit
4
your car is more crowded than you think. table 5.8 reports results from a 1969 personal transportation survey on "home-to-work" trips in metropolitan areas. The survey stated that the average car occupancy was 1.4 people. check that calculation.