webassign net/web/Student/Assignment-Responses/last?deps27985450The American Association of Individual Investors (AAII) On-Line Discount Broker Survey polls members on their experiences with discount brokers. As part of the survey, members were asked to rate the quality of the speed of execution with their broker as well as provide an overall satisfaction rating for electronic trades.Possible responses (scores) were no opinion (0), unsatisfied (1), somewhat satisfied (2), satisfied (3), and very satisfied (4). For each broker summary scores were computed by calculating a weighted average of the scores provided by each respondent. A portion of the survey results follow.t++ cBrokerageSpeed SatisfactionScottrade, Inc.3.43.5Charles Schwab3.33.4Fidelity Brokerage Services3.93.4TD Ameritrade3.63.7E*Trade Financial3.22.9Vanguard Brokerage Services3.82.8USAA Brokerage Services3.83.6Thinkorswim2.62.6Wells Fargo Investments2.72.3Interactive Brokers4.04.0Zecco.com2.52.5(a) Develop a scatter diagram for these data with the speed of execution as the independent variable4.5454.5454.04.04.04.03.5-3.5-3.53.5SE3.03.03.03.025252.52.52.53.0354.04.5253.03.54.04.5253.03.54.04.5253.03.54.04.55Speed of ExecutionSpred of ExecutionSpeed of ExecutionSpeed of Execution(b) What does the scatter diagram developed in part (a) indicate about the relationship between the two variables?O The scatter diagram indicates a positive linear relationship between speed of execution rating and overal satisfaction rating for electronic trades.ween speed of eecution rating and overall satisfaction rating for electronic trades.O The scatter diagram indicates no noticeable linear relationshipbetO The scatter dagram indicates a negative inear relationship between speed of execution rating and overal satisfaction rating for electronic trades.(c) Develop the least squares estimated regression equation. (Round vour numerical values to three decimal places.)(d) Provide an interpretation for the slepe of the estimated regression equationO The slope gives the change in the speed of execution rating for every one point increase in the overall satisfaction rating.O The slope gives the change in the speed of execution rating for every one point decrease in the overal satisfaction rating.O The slope gives the overall satisfaction rating when the speed of execution rating is 0.O The slope gives the change in the overall satistaction rating for every one point increase in the speed of execution ratingwhon the oaralca

(a) Procedure to obtain scatterplot using Excel: Enter the data in an excel sheet. Select the data…

Answered: The American Association of lIndividual…

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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A business reports that their average salary is over $91,000, the simple mean of the salaries listed in the chart. Alternatively, instead of a simple mean, the business could report the median, or the mode. Which would be the most useful to someone deciding whether to apply for an entry level job at this business? Job Number of Employees Salary Line workers 10 $30,000 Office manager 1 $45,000 CEO 1 $200,000 Select one: a. Simple mean is best b. Simple mean and median are nearly equal numerically. They are equally good for this purpose and better than the other options. O c. Simple mean and mode are equally good for this purpose and better than the other options. d. Median and mode are about equally good for this purpose and better than other options.
Official unemployment rates for the U.S. population are reportedon a monthly basis by the Bureau of Labor Statistics.For the period October, 2011, through January, 2012, theofficial unemployment rates were 8.9% (Oct.), 8.7% (Nov.),8.5% (Dec.), and 8.3% (Jan.). (Source: U.S. Bureau of LaborStatistics, www.bls.gov.) If the unemployment rateswere to continue to decrease following a linear model,(a) predict the unemployment rate on January, 2013.(b) predict when the United States would reach a zero unemploymentrate.
In a survey that asked individuals about their favorite styles of music, 37 replied rock, 27 said they preferred pop music, 14 stated they like classical music the most, and 3 individuals stated they preferred opera. Based on this data, what would be the mode? Why couldn’t the mean or median be used to describe this set of values?
The Gays Love You Chamber of Business conducted a survey amongst 17 furniture retailers to identify the percentage of bad debts in each company’s debtors’ book.The bad debts percentages are as follows 2.2 4.7 6.3 5.8 5.7 7.2 2.6 2.4 6.1 6.8 2.2 5.7 3.4 6.6 1.8 4.4 and 5.4 (a) Calculate the skewness coefficient for percentage of bad debts. Is the data skewed?(b) Compute the first quartile and the third quartile of the percentage of bad debts amongst the furniture retailers surveyed. Interpret these quartile values.
A university placement office sent a questionnaire to a sample of business graduates requesting information on monthly salaries. The following data shows the monthly salary (in thousands) of 11 graduates. 28, 35, 48, 20, 40, 40, 22, 19, 60, 55, 10 Calculate (i) the arithmetic mean, (ii) the geometric mean, (iii) the median and (iv) the mode.
According to the 2017 Corporate Travel Index compiled by Business Travel News, the average daily cost for business travel in the United States rose to $321 per day (Executive Travel website). The file Travel contains sample data for an analogous study on the estimated daily living costs for an executive traveling to various international cities. The estimates include a single room at a four- star hotel, beverages, breakfast, taxi fares, and incidental costs. Click on the datafile logo to reference the data. DATA file City Daily Living Cost ($) City Daily Living Cost ($) Bangkok 242.87 Мехico City 212.00 Bogota 260.93 Milan 284.08 Cairo 194.19 Mumbai 139.16 Dublin 260.76 Paris 436.72 Frankfurt 355.36 Rio de Janeiro 240.87 Hong Kong 346.32 Seoul 310.41 Johannesburg 165.37 Tel Aviv 223.73 Lima 250.08 Toronto 181.25 London 326.76 Warsaw 238.20 Madrid 283.56 Washington, D.C. 250.61 a. Compute the sample mean (to 2 decimals). 260.21 b. Compute the sample standard deviation (to 2 decimals). S…
You are a financial analyst for a brokerage firm. Is there a difference in dividend yield between stocks listed on the NYSE & NASDAQ? You collect the following data: NYSE NASDAQ Number 20 24 Sample mean 3.5 2.5 Sample std dev 1.30 1.16
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The U.S. National Center for Health Statistics complies birth statistics and publishes the results in vital statistics of the United States. The Center has historically believed that the mean of all newborns in the U.S. has been no less than 6.95 pounds. A sample of babies is selected so that the center can revise its belief. The following birth weights, in pounds are recorded: 7.4, 6.0, 8.6, 4.5, 2.0, 7.9, 4.0, 2.6, 5.9, 7.3, 7.3, 7.0, 6.3, 8.1, 7.1, 7.3, 6.6, 5.2, 9.8, 8.0, 10.9, 6.5, 3.8, 5.0, 8.0 a). At 5% level of significance, do these data provide sufficient evidence to refute the Center’s belief? Your conclusion must be in terms of the P-Value as well as setting up a Rejection Region. You must show all necessary work. b). Which statistical distribution should be applied in this situation and why? Explain carefully.
The measure of central tendency which is used for categorical data is .... ..

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