45 55 40 Overweight and Obesity in Adults 41.3 36.2 39.3 35 30.2 28 28.9 29 30 27.7 % 25 20 15 10 4.4 4.3 S 0.3 0.6 0 1234 India 2.4 5.5 19 34 1 - Men Overweight 2- Men Obese 3- Women Overweight 4- Women Obese 1234 1234 1234 China Mexico USA

45 55 40 Overweight and Obesity in Adults 41.3 36.2 39.3 35 30.2 28 28.9 29 30 27.7 % 25 20 15 10 4.4 4.3 S 0.3 0.6 0 1234 India 2.4 5.5 19 34 1 - Men Overweight 2- Men Obese 3- Women Overweight 4- Women Obese 1234 1234 1234 China Mexico USA

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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A researcher wishes to estimate the proportion of households with two cars.a) How large a sample is needed in order to be 99% confident that the sample proportion will not differ from the true proportion by more than 3%?b) Repear part a if a previous study indicates that the proportion of households with two cars is 25%.
The Bureau of Labor Statistics reports on a variety of employment statistics. "College Enrollment and Work Activity of 2004 High School Graduates" provides information on high school graduates by gender, by race, and by labor force participation as of October 2004.³ (All numbers are in thousands.) The following two tables provide information on the “Labor force status of persons 16 to 24 years old by educational attainment and gender, October 2004." Using the information contained in the tables, do Exercises 4.58 through 4.62. OS LabForce Women, Age 16 to 24 < High School HS degree Some college Civilian Labor Force Employed Unemployed 662 2,050 1,352 Bachelors degree or more 921 Column Total 4,985 For Males: P{CLF | HSD} P{CLF | BD} 205 334 126 Click here for the Excel Data File 55 720 For Females: P{EMPI (CLF and HSD)} P{EMP | (CLF and BDM)} P{CLF | HSD} P{CLF | BD} Not in Labor Force 759 881 321 105 2,066 P{EMPI (CLF and HSD)} P{EMPI (CLF and BDM)} Row Total 1,626 3,265 1,799…
4) Students in two fifth grades were given the same English test. One class of 27 students had a mean of 69 and the second class of 23 students had a mean of 74. What is the mean for the total number of students in both classes to the nearest 0.1?oielusiso pnidgst bomro
43) A plant manager is concerned with the variability of beer being filled in 12 oz. cans. The most appropriate control chart would be which of the following? A) x-bar chart B) R-chart C) p-chart D) c-chart E) None of the above 44) An airline company tracks the number of lost bags that occur each day. This is best monitored by which of the following control charts? A) x-bar chart B) R-chart C) p-chart D) c-chart E) None of the above 45) When receiving a shipment from a supplier, inspection must be done to check the fraction of defective products. This is best monitored by which of the following control charts? A) x-bar chart B) R-chart C) p-chart D) c-chart E) None of the above 46) A coffee dispenser is supposed to dispense coffee into an 8 o.z. cup. The average amount of coffee filled into the cup must be below 7.9. This is best monitored by which of the following control charts? A) x-bar chart B) R-chart C) p-chart D) c-chart E) None of the above 47) Which of the following control…
25.) 90% of all dogs have city licenses. If 7020 licenses have been issued, how many dogs are there in the city? 25.)
26. A survey conducted by the Bureau of Labor Statistics found that 67% of high school graduating class of 2007 went on to college the following year, while 44% of the class was working. Furthermore, 92% were either in college or working, or both. a. What percentage went on to college and work at the same time? b. What percentage went on to college but not work? c. What percentage were neither in college nor work?
3. A mathematics placement test is given to all entering freshmen at a small college. A student who receives a grade below 35 is denied admission to the regular mathematics course and placed in a remedial class. The placement test scores and the final grades for 20 students who took the regular course were recorded as follows: Placement Test Course Grade | Placement Test | Course Grade 50 53 90 54 35 35 41 80 60 91 61 48 40 56 60 71 55 68 60 71 65 36 40 47 35 11 55 53 60 70 50 68 90 79 65 57 35 59 50 79 (a) Plot a scatter diagram. (b) Find the equation of the regression line to predict course grades from placement test scores. (c) Graph the line on the scatter diagram (d) If 60 is the minimum passing grade, below which placement test score should students in the future be denied admission to this course?
In 1998, as an advertising campaign, the Nabisco Company announced a "1000 Chips Challenge," claiming that every 18-ounce bag of their Chips Ahoy! cookies contained at least 1000 chocolate chips. Dedicated statistics students at the Air Force Academy (no kidding) purchased some randomly selected bags of cookies and counted the chocolate chips. Some of their data are given below. Complete parts (a) through (c) below. 1270 1244 a) Check the assumptions and conditions for inference. Check the data for independence. Choose the correct answer below. A. 0+ 900 1356 1132 Chips 1600 OA. The sample is less than 10% of the population, so one can assume that the data are independent. B. The data are from a random sample, so one can assume that they are independent. OC. The data are from a random sample, so one can assume that they are not independent. OD. The sample is less than 10% of the population, so one can assume that the data are not independent. Construct a histogram of the data. Choose…
6) The boxplot summarizes information about the number of hours worked in December for 220 seniors at Tomah High School. a. What is the range? b. What is the interquartile range? c. What percent of the students worked 68 or more hours? d. What is the median? (Section 5-3) * 80 10 31 68 O a) 80 b) 58 c) 75% d) 68 O a) 58 b) 80 c) 25% d) 31 O a) 80 b) 58 c) 25% d) 31 O a) 58 b) 80 c) 75% d) 68
18. The governor of New York has banned selling or purchasing "large" soft drinks, where a "large" is defined as being more than 16 oz. Sonic, famous for its Route 44 drinks is interested in estimating the proportion of New Yorkers that favor this ban. From a random survey of 800 New Yorkers, 375 answered no to the question, “Do you favor the governor's ban on 'large' soft drinks?" a. Find a 97.5% confidence interval for the proportion of New Yorkers who favor the ban on "large" soft drinks. b. Interpret the confidence interval. c. Can you conclude with 97.5% confidence that a majority of New Yorkers favor the ban on "large" soft drinks? Why or why not. d. Without doing any other calculations, can you be 99% confident that a majority of New Yorkers favor the ban on “large" soft drinks?
8.