Question 7The following plots have been obtained for a time series.a) Suggest an appropriate ARIMA model based on the below plots.120-90-60-30-acf1980 Jan0.2-0.1-0.0-0.1-1990 Jan12lag [1M]182000 JanMonthpacf0.2-0.1-0.0-0.1-2010 Jan12lag [1M]182020 Jan24h) The following ARIMA output has been obtained from R. Based on this output b) The following ARIMA output has been obtained from R. Based on this output,explain which model would you recommend for forecasting?##.model#### 1 arima 011## 2 arima110## 3 autosigma2 log_lik AIC AICC17.117.1BIC ar_roots 17.4ma_roots-1393. 2787. 2787. 2806. -1399. 2780. 2780. 2815. -1392. 2788. 2788. 2807. c) If your selected model in part b) above has a p-value of 0.900 in the Ljung-Boxtest, would you recommend using this model? Explain why or why not.

ARIMA stands for Auto Regressive moving Notations: ARIMA (p,d,q) (P,D,Q)m ⋮…

Answered: Question 7 The following plots have…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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QUESTION 3 Suppose p* must approximate p = 90 with relative error at most 10-3. The largest interval in which p* must lie for value of p is: O [88.92] O [89, 91] O [89.99, 90.99] O [89.9, 90.9] O [89.91, 90.09]
Wage B1 B2 educ + €, where = 1. Wage means daily wage measured in dollars. 2. educ means years of education (schooling) The regression output is given below: reg wage educ Source | SS df MS Number of obs = 100 F(2, 97) = 97.14 Model 10000.00 1 5000.00 Prob > F = 0.0000 Residual | 10000.00 98 100.00 R-squared = 0.5000 Adj R-squared = 0.4900 Total | 20000.00 99 200.00 Root MSE = 10.000 wage | Coef. Std. Err. t P>|t| [95% Conf. Interval] educ | 10.0000 _cons | 10.0000 5.0000 10.0000 2.00 0.050 0.0000 20.0000 1.00 0.317 -20.0000 30.0000
Question #12 Claim: A majorityof adults would erase all of their personal information online if they could. A software firm survey of 486randomly selected adults showed that 65% of them would erase all of their personal information online if they could. Complete parts (a) and (b) below. a. Express the original claim in symbolic form. Let the parameter represent the adults that would erase their personal information. ________ ( A. μ, B. σ, C. p ) ________( A. ≠, B. >, C. <, D. = ) _________ (Type an integer or a decimal. Do not round.) b. Identify the null and alternative hypotheses. H0: ______( A. μ, B. σ, C. p ) _______( A. ≠, B. >, C. <, D. = ) ________ H1: _______( A. μ, B. σ, C. p ) _______( A. ≠, B. >, C. <, D. = ) ________ (Type integers or decimals. Do not round.)
Question 14
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Question 3 Consider the model y = yo + aot + Σ Et i=1 If we take the first difference, then the sequence {Ayt} is stationary All of the alternatives O If we take the first difference, then the sequence {Ay,} has mean yo If we take the first difference, then the sequence {y} is stationary If we take the first difference, then the sequence {y} is unstable < Previous 20 Nmc
QUESTION 19 The table below gives the number of touch downs scored by the Patriots every season from 1995 through 2019, as well as the number of touch downs scored against them by opponents. Season Patriots Opponents Season Patriots Opponents Season Patriots Opponents 1995 32 44 2004 49 31 2012 67 38 1996 48 34 2005 46 38 2013 47 39 1997 42 33 2006 46 24 2014 52 32 1998 35 36 2007 75 34 2015 52 36 1999 32 30 2008 43 37 2016 51 27 2000 28 38 2009 50 35 2017 49 33 2001 43 26 2010 65 36 2018 51 36 2002 43 41 2011 61 40 2019 49 25 2003 39 23 Make a back-to-back stem-and-leaf plot for this data by hand and attach your work as a pdf, jpg, or png.
QUESTION 14 Prior to a set of compensation policy changes at a company 31% of the employees surveyed said that they liked their job very much, 48% said that they liked their job moderately, and the remaining employees said that they were dissatisfied with their job. Now, in a survey of 190 employees, 63 said they liked their job very much, 104 said that they liked their job moderately, and the remaining employees said that they were dissatisfied with their job. When testing (at the 5% level of significance) whether the proportions have changed, what is the test statistic? (please round your answer to 3 decimal places)
QUESTION 15 Prior to a set of compensation policy changes at a company 31% of the employees surveyed said that they liked their job very much, 45% said that they liked their job moderately, and the remaining employees said that they were dissatisfied with their job. Now, in a survey of 202 employees, 76 said they liked their job very much, 106 said that they liked their job moderately, and the remaining employees said that they were dissatisfied with their job. When testing (at the 5% level of significance) whether the proportions have changed, what is the critical value? (please round your answer to 3 decimal places)
Question 3 Twenty sculptors were asked to produce molds of a model using a different medium for each one. The options are: having the model present at the session, using a photograph and seeing the model, but having to create the sculpture from memory. The sculptor then rated the difficulty of creating each piece of artwork (1=easy; 10 = difficult). The data is provided below: Subject 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Model Present 9 3 6 1 5 9 8 6 8 1 8 8 6 9 5 1 7 10 3 10 Photo 5 9 8 6 7 4 8 9 3 8 5 7 10 2 8 6 4 9 6 10 Memory 5 6 9 10 7 1 10 4 8 10 10 5 3 7 9 8 7 1 10 10 1. Use the data above to conduct a One-Way Repeated Measures ANOVA. The JASP output of all the statistical analyses performed as well as the file that was produced should be provided.
QUESTION 3 Suppose the following are the seasonal indices for the first three quarters of the year for a quarterly series: Quarter Seasonal Index Q1 74.2 Q2 83.4 Q3 107.8 Remember that the seasonal indices should average 100 so you should be able to infer the seasonal index for Q4. Furthermore, suppose that the estimated coeffcients from a regression of the deseasonalized series on Time are given below: Coefficients Intercept 2,785 Time 59.4 In general, what quarter is the busiest time of the year? (please just answer 1, 2, 3, or 4)
QUESTION 46 The Logan College men's basketball team won 12 of its first 20 games. At this rate how many games will they win if they play a 30 game schedule

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Question 7 The following plots have been obtained for a time series. a) Suggest an appropriate ARIMA model based on the below plots. 120- 90- 60-