4. A company that employs a large number of salespeople is interested in learning which of the salespeople sell the most: those strictly on commission, those with a fixed salary, or those with a reduced fixed salary plus a commission. The previous month's records for a sample of salespeople are inspected and the amount of sales (in dollars) is recorded for each, as shown in the table. Commission Plus Salary $492 Commissioned Fixed Salary $507 $450 $425 $361 $437 $432 $492 $450 $470 $483 $439 $466 $444 $467 Test to determine if a difference exists in the mean sale amounts among the three compensation systems. Test using a = .025.

Cost-to-charge ratios (the percentage of the amount billed that represents the actual cost) for 11 Oregon hospitals of similar size were reported separately for inpatient and outpatient services. The data are shown in the following table.   Cost-to-charge ratio Hospital Inpatient Outpatient Blue Mountain 79 61 Curry General 75 67 Good Shepherd 74 64 Grande Ronde 61 50 Harney District 101 53 Lake District 99 74 Pioneer 89 66 St. Anthony 65 57 St. Elizabeth 49 44 Tillamook 53 47 Wallowa Memorial 84 72   (a) Does there appear to be a strong linear relationship between the cost-to-charge ratio for inpatient and outpatient services? Justify your answer based on the value of the correlation coefficient and examination of a scatterplot of the data. (Round your answer to four decimal places.) Based on the correlation coefficient value of  and the scatterplot, there is      relationship between the cost-to-charge ratio for inpatient and outpatient services.…

1. Fill in the blanks for each of the statements below. а. A survey of 1000 U.S. adults found that 40% think the internet is the best way to get news and information. Population: Sample: Variable of Interest: Type of Data (Qualitative or Quantitative): Is the 40% a parameter or statistic, and why? b. A survey of the 55 law firms in a local city found that the average hourly billing rate is $425. Population: Sample: Variable of Interest: Type of Data (Qualitative or Quantitative): Is the $425 a parameter or statistic, and why?.

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

The family budget is illustrated in the figure to the right. What percent of take-home pay is spent for education if education, savings, and miscellaneous funds are used for education? The percent of total take-home pay used for education is% Distribution of Family Monthly Take-Home Pay Food $450 Housing $500 Insurance $80 Education $130 Personal $90 Miscellaneous $80 Clothing $170 Savings $150 Transportation $150

Plot 2 Out-of-State Tuition 20000 15000 10000 5000 Plot 2: Distribution of Out-of-State Tuition Based on Expenditure Category Above Average Expenditure Expenditure Category Below Average Expenditure

Plot 2 Out-of-State Tuition 20000 15000 10000 5000 Plot 2: Distribution of Out-of-State Tuition Based on Expenditure Category Above Average Expenditure Expenditure Category Below Average Expenditure

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 company's price/earnings (P/E) ratio is the company's current stock price divided by the latest 12 months' earnings per share. Suppose the following table shows the P/E ratios for a sample of 10 Japanese companies and 12 U.S. companies. Japan P/E Ratio 156 28 14 129 38 216 67 665 36 64   United States P/E Ratio 12 27 27 46 23 17 28 17 28 34 19 17 Is the difference between the P/E ratios for the two countries significant? Use the MWW test and ? = 0.01 to support your conclusion. State the null and alternative hypotheses. H0: The two populations of P/E ratios are identical.Ha: The two populations of P/E ratios are not identical.H0: The two populations of P/E ratios are not identical.Ha: The two populations of P/E ratios are identical.    H0: Median for Japanese companies − Median for U.S. companies > 0Ha: Median for Japanese companies − Median for U.S. companies = 0H0: Median for Japanese companies − Median for U.S.…

The director of library services at a college did a survey of types of books (by subject) in the circulation library. Then she used library records to take a random sample of 888 books checked out last term and classified the books in the sample by subject. The results are shown below. Subject Area Percent of Books on Subject in CirculationLibrary on This Subject Number of Books inSample on This Subject Business 32% 284 Humanities 25% 218 Natural Science 20% 207 Social Science 15% 102 All other subjects 8% 77   (b) Find the value of the chi-square statistic for the sample. (Round the expected frequencies to three decimal places. Round the test statistic to three decimal places.)