A sample of 25 undergraduates reported the following dollar amounts of entertainment expenses last year: 717681735725719721737698718759681699696716719722733720690691768709736761687 b. What are the range and standard deviation? (Round the "Range" to whole numbers and the "Mean" to 2 decimal places.)Range87Standard deviation c. Use the Empirical Rule to establish an interval which includes about 95 percent of the observations. (Round your answers to 2decimal places.)The interval is fromup to

sample of 25 undergraduates reported the following dollar amounts of entertainment expenses last year: 717 681 735 725 719 721 737 698 718 759 681 699 696 716 719 722 733 720 690 691 768 709 736 761 687

sample of 25 undergraduates reported the following dollar amounts of entertainment expenses last year: 717 681 735 725 719 721 737 698 718 759 681 699 696 716 719 722 733 720 690 691 768 709 736 761 687

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

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Ralph Lauren Corporation (RL) designs, markets, and distributes a variety of apparel, home décor, accessory, and fragrance products. The company’s products include such brands as Ralph Lauren, Polo by Ralph Lauren, and Chaps. For two recent years, the company reported the following (in millions): Year 2 Year 1 Sales $7,230 $7,451 Accounts receivable (end of year) 517 655 The accounts receivable at the beginning of Year 1 was $588 million. a. Compute the accounts receivable turnover for Year 1 and Year 2. Round to one decimal place. Year 1 Year 2 Accounts Receivable Turnover fill in the blank 1 fill in the blank 2 b. Compute the number of days’ sales in receivables for Year 1 and Year 2. Use 365 days and round all calculations to one decimal place. Year 1 Year 2 Number of Days’ Sales in Receivables fill in the blank 3 days fill in the blank 4 days
The female life expectancy and the male life expectancy (in years) for 30 industrial countries were recorded. The data are shown in the back-to-back stemplot below. Female Life Expectancy Male Life Expectancy 68 69 69 70 18 71 72 9 8 73 0 74 9 75 12 5 68 9 76 2 2 7 789 99 77 1 2 4 5 6 7 78 0 4 5 6 7 4 1 79 2 4 2 80 988 7 7 6 6 4 1 81 8 7 5 3 3 2 82 998 32 183 84 5 85 6816 represents 68.6 years Based on the stemplot, which of the following statements is true? (A) The median life expectancy and the range of life expectancies are both less for females than for males in these countries. (B) The median life expectancy and the range of life expectancies are both greater for females than for males in these countries. (C) The median life expectancy is the same for females and males in these countries, and the range of life expectancies is the same for females and for males in these countries. (D) The median life expectancy is less for females than for males in these countries, and the range of…
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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. (a) Plot a scatter diagram. (b) Find the equation of the regression line to predict course grades from placement test scores.
A survey of enrollment at 35 community colleges across the United States yielded the following figures†. 6414; 1550; 2109; 9350; 21828; 4300; 5944; 5722; 2825; 2044; 5481; 5200; 5853; 2750; 10012; 6357; 27000; 9414; 7681; 3200; 17500; 9200; 7380; 18314; 6557; 13713; 17768; 7493; 2771; 2861; 1263; 7285; 28165; 5080; 11622 A school with an enrollment of 22,900 would be how many standard deviations away from the mean? (Round your answer to two decimal places.)
1040 1040 1290 1035 1050 960 745 770 1400 1080 845 1130 1025 1090 830 1075 810 1045 1015 970 1135 1160 1595 1365 825 1405 1230 1485 1015 715 1035 825 1190 1175 950 1305 1335 1725 1515 895 810 1135 1580 1130 1340 655 960 1265 860 875 940 1535 930 1480 1280 1055 1405 1220 1090 1410 1115 1010 1135 1135 1050 1205 1100 1290 1345 1170 1225 925 1255 1650 1000 890 1200 980 1005 1525 1165 1335 1175 1755 1035 1125 920 1150 1300 955 1075 1195 1475 1085 990 1295 835 1065 1405 1075 9 Currently 200 students are taking E270. Suppose each student is assigned to take a random sample of 100 two-bedroom aprtments in Indianapolis Metropolitan Area (IMA) and each build a 95% confidence interval for the average monthly rent for two-bedroom apartments. How many of the 200 interval estimated submitted by students do you expect to capture the population mean monthly rent? a 195 b 190 c 185 d 95
The following data was accessed January 6, 2022: Country Total Deaths Total Cases Population 5,484,942 298,766,667 7,918,490,000 853,612 482,876 619,559 149,515 World USA 58,805,186 35,109,286 1,400,494,834 22,351,104 14,015,065 333,934,783 India 214,841,765 68,424,733 Brazil UK Calculate the correct numbers using the world data above to insert in the sentences below. COVID has altered our world. But how many people have really died in the world? (media form here) Select an answer people! That's a really big number, but how can we understand that number? One way is to talk about the case fatality rate, that's the chance that a person who gets COVID will die. Based on the table, that is % of people who get COVID will die. That is in every 100 people or in every 1000 people. Another valuable number to consider is what percent of our total population have died? 36. That means 1 in every people have died. Submit Question
The following data represent the monthly phone use, in minutes, of a customor onrolled in a fraud prevention program for the past 20 months. The phone company decides to use the upper fence as the cutoff point for the number of minutes at which the customer should be contacted. What is the cutoff point? 530 496 331 467 548 346 511 377 411 415 360 339 363 372 343 477 474 333 610 441 The cutoff point isminutes. (Round to the nearest minute)