The 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. Speed (X) Satisfaction (Y) 3.4 Brokerage Scottrade, Inc. Charles Schwab 3.3 Fidelity Brokerage Services 3.4 TD Ameritrade 3.6 E*Trade Financial 3.2 Vanguard Brokerage Services 3.8 USAA Brokerage Services 3.8 2.6 2.7 4.0 2.5 Thinkorswim Wells Fargo Investments Interactive Brokers Zecco.com 3.5 3.4 3.9 3.7 2.9 2.8 3.6 2.6 2.3 4.0 2.5 Using R, make a scatter diagram for these data with the speed of execution as the independent variable. Then, fit the model Yi = Bo + B₁ X₁ + ₁, where ; are independent N(0, 02), i = 1,2,..., 11. Obtain the maximum likelihood estimate (mle) of 2 Your final answer must be a number. Please round it to 4 decimal places.
The 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. Speed (X) Satisfaction (Y) 3.4 Brokerage Scottrade, Inc. Charles Schwab 3.3 Fidelity Brokerage Services 3.4 TD Ameritrade 3.6 E*Trade Financial 3.2 Vanguard Brokerage Services 3.8 USAA Brokerage Services 3.8 2.6 2.7 4.0 2.5 Thinkorswim Wells Fargo Investments Interactive Brokers Zecco.com 3.5 3.4 3.9 3.7 2.9 2.8 3.6 2.6 2.3 4.0 2.5 Using R, make a scatter diagram for these data with the speed of execution as the independent variable. Then, fit the model Yi = Bo + B₁ X₁ + ₁, where ; are independent N(0, 02), i = 1,2,..., 11. Obtain the maximum likelihood estimate (mle) of 2 Your final answer must be a number. Please round it to 4 decimal places.
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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[STATISTICS] How do you solve this?
Transcribed Image Text:The 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.
Brokerage
Speed (X) Satisfaction (Y)
Scottrade, Inc.
3.4
Charles Schwab
3.3
Fidelity Brokerage Services 3.4
TD Ameritrade
3.6
E*Trade Financial
3.2
Vanguard Brokerage Services 3.8
USAA Brokerage Services 3.8
2.6
2.7
4.0
2.5
Thinkorswim
Wells Fargo Investments
Interactive Brokers
Zecco.com
3.5
3.4
3.9
3.7
2.9
2.8
3.6
2.6
2.3
4.0
2.5
Using R, make a scatter diagram for these data with the speed of execution as the independent variable.
Then, fit the model
Y₁ = Bo + B₁ X₁ + €į, where ; are independent N(0, o²), i = 1, 2, ..., 11.
Obtain the maximum likelihood estimate (mle) of o2 Your final answer must be a number. Please round it to 4 decimal places.
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