The table to the right represents the annual percentageof smartphones sold in a certain region in 2011, 2012,and 2013 (projected).a. What conclusions can you reach about the market forsmartphones in 2011, 2012, and 2013?b. What differences are there in the market forsmartphones in 2011, 2012, and 2013?TypeType 1Type 2Type 3Type 4Type 5Type 62011201252% 65%18%16%1%6%13%7%13%3%4%2%a. Select all that apply.A. Type 3 had the second largest percentage of smartphones sold in all three years.B. Type 2 had the second largest percentage of smartphones sold in all three years.C. Type 6 had the smallest or close to the smallest percentage of smartphones sold in all three years.D. Type 1 had the largest percentage of smartphones sold in all three years.E. Type 5 had the smallest or close to the smallest percentage of smartphones sold in all three years.201354%20%18%4%2%2%

From the given table A. Type 3 had the second largest percentage of smartphones sold in all three…

Answered: The table to the right represents the…

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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The table below contains real data for the first two decades of AIDS reporting. Year # AIDS cases diagnosed # AIDS deaths Pre-1981 91 29 1981 319 121 1982 1,170 453 1983 3,076 1,482 1984 6,240 3,466 1985 11,776 6,878 1986 19,032 11,987 1987 28,564 16,162 1988 35,447 20,868 1989 42,674 27,591 1990 48,634 31,335 1991 59,660 36,560 1992 78,530 41,055 1993 78,834 44,730 1994 71,874 49,095 1995 68,505 49,456 1996 59,347 38,510 1997 47,149 20,736 1998 38,393 19,005 1999 25,174 18,454 2000 25,522 17,347 2001 25,643 17,402 2002 26,464 16,371 Total 802,118 489,093 Graph "year" versus "# AIDS cases diagnosed" (plot the scatter plot). Do not include pre-1981 data. Perform linear regression. Write the equations. (Round your answers to the nearest whole number. Round r to four decimal places.) (a) Linear Equation: 9 - (b) a = (c) b= (d) (e) n-
e_id%3D_2120042_1&group_id%3D&mode%3Dview PROBLEM #2 The table below is a summary of a neighborhood survey. Which of the neighborhoods would you consider the lowest income neighborhood? Explain your answer? TABLE 1 CROWN PROSPECT HEIGHTS, EAST NEW YORK HEIGHTS/ FLATBUSH BED-STUY / BUSHWICK INCOME Count % Count % Count LESS THAN $15,000 45 19.7% 7.8% 11 8.3% $15 000 $24,999 69 30.1% 25 39.1% 38 28.6% $25,000 $34 999 64 27.9% 18 28.1% 40 30.1% $35,000 $44,999 27 11.8% 9.4% 21 15.8% $45.000 OR MORE 24 10.5% 10 15.6% 23 17.3% 1. You must create a new table in MS-Excel to calculate the Midpoints of the Income ranges and calculate the Estimated Weighted Average Income for each of the neighborhoods before you can make a valid decision. 2. For each of the neighborhoods establish a 98% Confidence Interval to estimate the mean income 3. Do you observe any overlaps in the estimated mean incomes between any two neighborhoods? Cance Save Draft Submit 3:59 AM 2Type here to search 6. Rain off and on…
3. The Save More Rental Car Agency at the Cincinnati airport would like to examine records from last summer in order to plan for the coming summer demand. The data for last year's demand, broken down by type of vehicle requested, is shown in the table below. Vehicle Type Sub-compact Compact Full-size Frequency 545 892 740 360 280 168 2985 * Total is not equal to 1.000 due to rounding error. Relative Frequency 0.183 0.299 0.248 Luxury SUV Van Total 0.121 0.094 0.056 1.001* a) Construct a frequency and relative frequency bar chart for the data. b) Construct a pie chart to display the information. c) This summer's demand is expected to be 20% higher than demand for last summer. Approximately how many luxury cars are expected to be rented this summer?
C8. According to the Pew Research Center (2015), recent immigrants are better educated than earlier immigrants to the United States. The change was attributed to the availability of better education in each region or country of origin. The percentage of immigrants 25 years of age and older who completed at least high school is reported in this table for 1970 to 2013. Write a statement describing the change over time in the percentage who completed at least a high school degree. 1970 1980 1990 2000 2013 Mexico 14 17 26 30 48 Other Central/South America 57 53 60 66 Asia 75 72 75 82 84 48 68 81 87 95 Europe 36 48 52 58 72 Caribbean 81 91 88 85 85 Africa Source: Pew Research Center, Modern Immigration Wave Brings 59 Million to U.S., Driving Population Growth and Change Through 2065, 2015. Retrieved from https://www.pewresearch.org/hispanic/2015/09/28/modern- immigration-wave-brings-59-million-to-u-s-driving-population-growth-and-change-through-2065/ 52
A pharmaceutical company sells 78 different products. The distribution of last year's annual sales amounts is shown below. Number of Products 100 90 80 70 60 50 40 30 20 10 0 0 5, 17 30 137 50 175, 611 125 74 100 150 Annual Sales ($000) 200 200, 78 250 C What annual sales in the top 5.13%? A. 78 B. None of the above C. 125 D. 200 E. 74
mpute Marshall – Edgeworth price index number for the following data by taking 2016 as base year. Items sold out in a men's wear 2017. 2016 GRSH Prices Quantity Quantity Prices Shirts 900 175 700 150 Pants 1200 150 1000 100 Sandals 600 100 500 70 Shoes 1800 60 1500 50 150 Belts Watches 400 100 600 250 300 1500 1200
A poll uses responses everal questions to calculate a "Happiness" index that measures overall happiness. An article included the happiness index for the 7 years between 2008 and 2016. Also included in the article were the percentages of people who responded "somewhat agree" or "strongly agree" to the following statements. Statement 1 (happy with life) 1: At this time, I'm generally happy with my life. Statement Year 2008 2009 2010 2011 2013 2015 2016 2 (won't benefit): I won't get much benefit from the things that I do anytime soon. Happiness Index 36 36 34 32 36 33 30 Happy with Life Statement (percentage somewhat or strongly agree) 82 83 78 79 83 80 82 Won't Benefit Statement (percentage somewhat or strongly agree) 31 37 35 39 39 37 42 (a) Calculate the value of the correlation coefficient for Happiness index and the response to the Happy with life statement. (Round your answer to four decimal places.) 0.8321 x (b) Calculate the value of the correlation coefficient for Happiness…
The number of adult Americans who smoke continues to drop. The table contains estimates of the percentages of adults (ages 1818 and over) who were smokers in the years between 1965 and 201715.and 201715. ???? ?Year � ??????? ?Smokers � 1965 41.94 1970 37.4 1974 37.1 1978 34.1 1980 33.2 1983 32.1 1985 30.1 1987 28.8 1990 25.5 1993 25.0 1995 24.7 1997 24.7 1999 23.5 2001 22.8 2002 22.5 2004 20.9 2006 20.8 2008 20.6 2010 19.3 2012 18.1 2014 16.8 2017 14.0 According to your regression line, how much did smoking decline per year during this period, on the average? Give your answer to three decimal places. average smoking decline: percentage points
6. A social worker looks at data in her state regarding the relationship between being in foster care and having a criminal record by the age of 25. "Aging out' refers to when a youth turns 18 years old and is expected to move out of foster care and start their lives on their own. Fictional data fro 1350 youths is shown below. Answer the following questions in the space below, labeling each response a, b, or c. What percentage of youths overall were adopted before aging out, and had a criminal record? What percentage of youths were in foster care until they were aged out? True or False: If foster care status and having a crime record were independent of each other, and 55% overall had no crime record, you would expect 55% of those who aged out in foster care to have no crime record. No crime record Crime record Total Foster care until ‘aged out’ 445 450 895 Adopted before aging out 300 155…
A psychologist believed that as children get older, they engage in more “inactive activities” such as playing computer games, watching TV and surfing the internet. She collected data from 10 children. She recorded the age of each child and the amount of activity (in hours) the child engaged in per week. Age Activity 7 4.3 9 3.2 10 1 13 1.5 12 1.2 15 0.8 9 3 12 4 15 1.5 14 1.9 Using excel, obtain a scatterplot of the data. Discuss the relationship between age and activity based on the scatterplot. Using excel, obtain the simple linear regression linear regression line predicting activity from age. Interpret the intercept and slope of the regression line. By hand, predict the amount of activity for age = 14. By hand, calculate the residual for age = 14 Using excel output, test the null hypothesis that the slope coefficient is zero using the p-value approach. Write one sentence interpreting the meaning of this result. Make sure to report the test statistic…
The following table provides data on access to running water in the home for a certain developing country in 2006. Use the table to find answers to the questions. Have running water in the home Do not have running water in the home 100% People in Urban Areas 90% 78,359,000 3,265,000 People in Rural Areas 18,559,000 7,217,000 What percent of people in that country have running water in the house? Round answers to the nearest percent and include the % sign in your answer. Note that this is the number of the people that have running water (both in rural an urban areas) divided by the total number of people in the country (107,400,000). BZW

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