QUESTION 2 Co. i Banila Co. selected 1,000 young adults at random and surveyed them to determine a relationship between the monthly spending on skincare products and the age of the customers. The survey findings are reported in the table below. Monthly spending ($) Age 20s 30s $0.00 - S49.99 $50.00 - $99.99 $100.00 - $149.99 $150.00 - $199.99 $200.00 - $249.99 75 29 91 83 113 90 89 128 63 159 $250.00 or more 34 46 Total customers 465 535 a. Given that a customer is in his/her 20s, what is the probability that he/she spends less than $100.00? e. Given that a customer spends $200.00 or more, what is the probability that he/she is in his/her 30s? f. Are the events "age of 20s" and "monthly spending of $250.00 or more" mutually

QUESTION 2 Co. i Banila Co. selected 1,000 young adults at random and surveyed them to determine a relationship between the monthly spending on skincare products and the age of the customers. The survey findings are reported in the table below. Monthly spending ($) Age 20s 30s $0.00 - S49.99 $50.00 - $99.99 $100.00 - $149.99 $150.00 - $199.99 $200.00 - $249.99 75 29 91 83 113 90 89 128 63 159 $250.00 or more 34 46 Total customers 465 535 a. Given that a customer is in his/her 20s, what is the probability that he/she spends less than $100.00? e. Given that a customer spends $200.00 or more, what is the probability that he/she is in his/her 30s? f. Are the events "age of 20s" and "monthly spending of $250.00 or more" mutually

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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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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" vs. "# AIDS deaths." Do not include pre-1981. Label both axes with words. Scale both axes. Calculate the following. (Round your answers to the nearest whole number. Round the correlation coefficient r to four decimal places.) (a) a = (b) b = (c) r = (d) n =
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3. Consumer Reports recently followed up with a survey to its readers asking about political preferences and primary choice of mobile device. There was a total of 11,214 Republican respondents. Of the 9,500 Democrats responding, 470 reported using a device not listed and 292 said they used a Windows phone. The total usage of Android devices recorded totaled 8,926; 3,921 of Android users were Republicans. Interestingly, there were an equal number of Apple and Android users reporting as Republicans. There were 4,528 Democrats using an Apple device. Only 2,672 of those surveyed reported as Independent, 51 said they used a Windows device and 428 said they used an Apple device. There were 3,652 total Windows device users surveyed. Consumer Reports Survey of Political Preference and Preferred Mobile Device Republican Independent Democrat Total Apple Android Windows Other Total Part A: Complete the two-way frequency table above. Part B: What is the joint relative frequency of Independents…
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The Bureau of Labor Statistics provides the annual average unemployment rate (civilian workforce 16 years and older) in the United States. This information is given in the following table. Year Unemployment Rate 2006 4.6% 2007 4.6% 2008 5.8% 2009 9.3% 2010 9.6% 2011 8.9% (a) Which of the following explanations is the BEST reason for NOT using a pie chart to represent this data? (Choose only one.) Bar charts are always better representations of data. There are too many years for a pie chart to useful. The numbers do not add to 100%. Each of the percentages comes from a different base. That is, each of the percentages are not part of the same whole. (b) Think about the similarities and differences of pie charts, bar graphs, and histograms. Select ALL of the following statements that are TRUE. Pie charts and bar graphs are used to compare variables while histograms are used to examine the distribution of data. Pie charts, bar graphs, and histograms can…
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A graduating class reported starting salaries represented on the following frequency table. Number of students Starting Salary ($) 10 15,000 17 20,000 25 25,000 38 30,000 27 35,000 21 40,000 45,000 For the data in the table above, what is the MEAN?
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