â. '11 67% 10:30 PM A webwork.bmcc.cuny.edu/webwork2, 3 Previous Problem Problem List Next Problem Results for this submission Entered Answer Preview Result 10 incorrect The answer above is NOT correct. (1 point) Factor completely, if possible. Be sure to factor out the greatest common factor first if it is other than 1 Preview My Answers Submit Answers Your score was recorded You have attempted this problem 1 time. You received a score of 0% for this attempt. Your overall recorded score is 0% You have unlimited attempts remaining Email WeBWorK TA Page generated at 02/12/2019 at 10:04pm EST WeBWork 1996-2019 theme: math4 ww_version: WeBWork-2.14 pg_version PG-2.14 TBe WeBWorK Project

â. '11 67% 10:30 PM A webwork.bmcc.cuny.edu/webwork2, 3 Previous Problem Problem List Next Problem Results for this submission Entered Answer Preview Result 10 incorrect The answer above is NOT correct. (1 point) Factor completely, if possible. Be sure to factor out the greatest common factor first if it is other than 1 Preview My Answers Submit Answers Your score was recorded You have attempted this problem 1 time. You received a score of 0% for this attempt. Your overall recorded score is 0% You have unlimited attempts remaining Email WeBWorK TA Page generated at 02/12/2019 at 10:04pm EST WeBWork 1996-2019 theme: math4 ww_version: WeBWork-2.14 pg_version PG-2.14 TBe WeBWorK Project

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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ch 13. 5: Cincinnati Paint Company sells quality brands of paints through hardware stores throughout the United States. The company maintains a large sales force who call on existing customers and look for new business. The national sales manager is investigating the relationship between the number of sales calls made and the miles driven by the sales representative. Also, do the sales representatives who drive the most miles and make the most calls necessarily earn the most in sales commissions? To investigate, the vice president of sales selected a sample of 25 sales representatives and determined: The amount earned in commissions last month (y) The number of miles driven last month (x1) The number of sales calls made last month (x2) The information is reported below. Commissions ($000) Calls Driven Commissions ($000) Calls Driven 29 139 2,371 27 146 3,290 26 132 2,226 25 144 3,103 28 144 2,731 29 147 2,122 26 142 3,351 25 144 2,791 29 142 2,289 25 149 3,209 28…
7.6 A leading researcher in the study of interstate highway accidents proposes that a major cause of many collisions on the interstates is not the speed of the vehicles but rather the difference in speeds of the vehicles. When some vehicles are traveling slowly while other vehicles are traveling at speeds greatly in excess of the speed limit, the faster-moving vehicles may have to change lanes quickly, which can increase the chance of an accident. Thus, when there is a large variation in the speeds of the vehicles in a given location on the interstate, there may be a larger number of accidents than when the traffic is moving at a more uniform speed. The researcher believes that when the standard deviation in speed of vehicles exceeds 10 mph, the rate of accidents is greatly increased. During a 1-hour period of time, a random sample of 50 vehicles is selected from a section of an interstate known to have a high rate of accidents, and their speeds are recorded using a radar gun. The data…
Should large retailers offer banking services? Small community banks may be concerned about their future if more retailers enter the world of banking. Suppose that a market research company conducted a national survey for one retailer that is considering offering banking services to its customers. The respondents were asked to indicate the provider (bank, retail store, other) that they most likely would use for certain banking services (assuming that rate is not a factor). Is there a relationship between these two variables? Provider Service Bank Retail Store Other Checking account Savings account Home mortgage 100 85 30 45 25 10 10 45 80
An area or topic of research that has not been approached by any researcher is known as ______; a. Significance of the study b. Research problem c. None of the above d. Research gap
A psychologist is interested in how men and women react toward mental health counseling. She asked 60 men and 90 women whether they would consider using mental health services should they think they might need them. The choices were no, maybe, and yes. The following table lists the answers for the men and women in the form of a 2 x 3 contingency table. Using a chi-square analysis answer the question: Is there a relationship between men and women's willingness to use mental health counseling services? Use alpha = .05 No Maybe Yes Males 17 32 11 Females 13 43 34 df= Critical value of 2 = Calculated value of 2 = Calculated p Conclusion: State your results as if you are writing it in an APA paper
Suppose that a researcher is interested in the average standardized test score for fifth graders in a local school district. The fifth graders at a specific school would comprise a ___________ and their average test score would be a ___________.
How profitable are different sectors of the stock market? One way to answer such a question is to examine profit as a percentage of stockholder equity. A random sample of 32 retail stocks such as Toys 'R' Us, Best Buy, and Gap was studied for x1, profit as a percentage of stockholder equity. The result was x1 = 14.0. A random sample of 36 utility (gas and electric) stocks such as Boston Edison, Wisconsin Energy, and Texas Utilities was studied for x2, profit as a percentage of stockholder equity. The result was x2 = 10.3. Assume that ?1 = 4.5 and ?2 = 3.0. (a) Categorize the problem below according to parameter being estimated, proportion p, mean ?, difference of means ?1 – ?2, or difference of proportions p1 – p2. Then solve the problem. p1 – p2?1 – ?2 ?p (b) Let ?1 represent the population mean profit as a percentage of stockholder equity for retail stocks, and let ?2 represent the population mean profit as a percentage of stockholder equity for utility stocks. Find a 99%…
A two-factor, between subject research study with two levels of factor A and two levels of factor B would require two separate groups of participants. True False
Researchers want to cross two yellow-green tobacco plants with genetic makeup (Gg). Here is a Punnett square for this genetic experiment: G g G GG Gg g Gg gg This suggests that the expected ratio of green (GG) to yellow-green (Gg) to albino (gg) tobacco plants should be 1:2:1. When the researchers cross 84 pairs of yellow-green plants, the resulting offspring distribution is 22 green, 50 yellow-green, and 12 albino seedlings. Use a chi-square goodness of fit test to assess the validity of the researcher’s genetic model.
A sociologist recorded the number of contacts entered in a cell phone and the number of texts sent in a week for 20 cell phone users. The resulting data were used to conduct a hypothesis test to investigate whether there is a linear relationship between the number of contacts and the number of texts sent. What are the correct hypotheses for the test? H0:β1=0Ha:β1≠0H0:β1=0Ha:β1≠0 A H0:β1=0Ha:β1>0H0:β1=0Ha:β1>0 B H0:β1=0Ha:β1<0H0:β1=0Ha:β1<0 C H0:β1≠0Ha:β1=0H0:β1≠0Ha:β1=0 D H0:b1=0Ha:b1≠0 E
A municipal solid-waste site for a city must be located at Site A or Site B. After sorting, some of the solid refuse will be transported to an electric powerplant where it will be used as fuel. Data for the hauling of refuse from each site to the power plant are shown in Table P2-4. If the power plant will pay $8.00 per cubic yard of sorted solid waste delivered to the plant, where should the solid-waste site be located? Use the city’s viewpoint and assume that 200,000 cubic yards of refuse will be hauled to the plant for one year only. One site must be selected.
A factorial experiment involving two levels of factor A and three levels of factor B resulted in the following data. Factor B Level 1 Level 2 Level 3 Factor A Level 1 136 89 75 166 65 93 Factor A Level 2 124 128 120 94 106 136 Test for any significant main effects and any interaction. Use ? = 0.05. Find the value of the test statistic for factor A. (Round your answer to two decimal places.) Test statistic=?? Find the p-value for factor A. (Round your answer to three decimal places.) p-value = ?? State your conclusion about factor A. -Because the p-value > ? = 0.05, factor A is significant. -Because the p-value > ? = 0.05, factor A is not significant. - Because the p-value ≤ ? = 0.05, factor A is not significant. -Because the p-value ≤ ? = 0.05, factor A is significant. Find the value of the test statistic for factor B. (Round your answer to two decimal places.) Test statistic=?? Find the p-value for factor B. (Round your…