World's Richest., Each year,Forbes magazine publishes alist of the world's richest people. In 2009, the six richest people,their citizenship, and their wealth (to the nearest billion dollars) are as shown in the following table. Consider these five people a population of interest. Wealth ($ billion) Name William Gates III (G) Warren Buffett (B) Carlos Slim Helu (H) Lawrence Ellison (E) Ingvar Kamprad (K) 40 38 35 23 22 a. Find the mean, u, of the variable. b. For each of the possible sample sizes 2, 3, 4 construct a table and draw a dotplot for the sampling distribution of the sample mean c. Construct a graph and interpret your results.

A certain health maintenance organization (HMO) wishes to study why patients leave the HMO. A SRS of 360 patients was taken. Data was collected on whether a patient had filed a complaint and, if so, whether the complaint was medical or nonmedical in nature. After a year, a tally from these patients was collected to count number who left the HMO voluntarily. Here are the data on the total number in each group and the number who voluntarily left the HMO:   No complaint Medical complaint Nonmedical complaint Total 159 132 69 Left 60 34 26 If the null hypothesis is H0:p1=p2=p3 and using α=0.01, then do the following:  (a) Find the expected number of people with no complaint who leave the HMO: (b) Find the expected number of people with a medical complaint who leave the HMO: (c) Find the expected number of people with a nonmedical complaint who leave the HMO: (d) Find the test statistic: (e) Find the degrees of freedom: (f) Find the critical value:

Please answer Parts D and E

53. Many countries, especially those in Europe, have significant gold holdings. But, many of these countries also have massive debts. The following data show the total value of gold holdings in billions of U.S. dollars and the debt as a percentage of the gross domestic prod- uct for nine countries (WordPress and Trading Economics websites, February 24, 2012). Gold Value Debt Country ($ billions) (% of GDP) China 63 17.7 DATA file France 146 81.7 Germany Indonesia Italy Netherlands 203 83.2 GoldHoldings 33 69.2 147 119.0 36 63.7 Russia 50 9.9 Switzerland 62 55.0 United States 487 93.2 Using the entire data set, develop the estimated regression equation that can be used to predict the debt of a country given the total value of its gold holdings. d. Use residual analysis to determine whether any outliers or influential observations are C. present. Suppose that after looking at the scatter diagram in part (a) that you were able to visually identify what appears to be an influential…

The numbers of users that check social media daily is the same for "35 to 44" and "45 to 54" age groups. IF there are 41 million "35-45" year olds in North America, how many "45-54" year olds are there?

The file MidCity Download MidCitycontains data on 128 recent sales in Mid City. For each sale, the file shows the neighborhood (1, 2, or 3) in which the house is located, the number of offers made on the house, the square footage, whether the house is made primarily of brick, the number of bathrooms, the number of bedrooms, and the selling price. Neighborhoods 1 and 2 are more traditional neighborhoods, whereas neighborhood 3 is a newer, more prestigious neighborhood. PROBLEM 1: Construct 3 different confidence intervals. Part A) Sort and filter the data from the MidCity file so that you only consider the data from neighborhood 1.  Construct a 99% confidence interval for the square footage of all homes in neighborhood 1.  Make sure you list the specific equations you are using, ALL variables, show ALL work etc., in your report.  You can use Excel to complete all computations. Remember to interpret these confidence intervals in the context of this problem.  Use one Excel spreadsheet…

Label the columns of the table of the World Bank, four income groups 2017?     Low income 31 Lower middle income 56 Upper middle income 54 High income 53

Explain why in a group of 20 people there must be at least two people who share the same birth month.

The file MidCity Download MidCitycontains data on 128 recent sales in Mid City. For each sale, the file shows the neighborhood (1, 2, or 3) in which the house is located, the number of offers made on the house, the square footage, whether the house is made primarily of brick, the number of bathrooms, the number of bedrooms, and the selling price. Neighborhoods 1 and 2 are more traditional neighborhoods, whereas neighborhood 3 is a newer, more prestigious neighborhood. Conduct a regression analysis to understand, estimate and interpret the square footage of houses in Mid City. Use one Excel spreadsheet labeled P2 to show your work for this problem.   Home Nbhd Offers Sq Ft Brick Bedrooms Bathrooms Price 1 2 2 1790 No 2 2 228600 2 2 3 2030 No 4 2 228400 3 2 1 1740 No 3 2 229600 4 2 3 1980 No 3 2 189400 5 2 3 2130 No 3 3 239600 6 1 2 1780 No 3 2 229200 7 3 3 1830 Yes 3 3 303200 8 3 2 2160 No 4 2 301400 9 2 3 2110 No 4 2 238400 10 2 3 1730 No 3 3 208000 11 2 3 2030…

Midland National Bank selected a sample of 40 student checking accounts. Below are their end-of-the-month balances. $ 279 $149. 489 $ 43 57 72 440 37 302 489 303 $ 404 87 703 968 Balance 0 up to 100 100 up to 200 200 up to 300 300 up to 400 400 up to 500 500 up to 600 600 up to 700 700 up to 800 $ 74 234 125 712 800 up to 900 900 up to 1,000 Total $ 234 68 350 503 + Frequency 327 Cumulative frequency $ 215 185 252 608 $ 123 141 27 358 Click here for the Excel Data File a. Tally the data into a frequency distribution using $100 as a class interval and $0 as the starting point. $ 55 758 521 425 $ 321 863 127 203