Question 2What is the cumulative error for the WMA3 forecast? (remember: weights are 0.5, 0.33, and 0.17)O 116.028.1O 31.63.4Question 3What is the Bias of the Exponential Smoothing forecast, with alpha 0.3.O 10.528.1O 020.214.2 From problem 15-3alpha0.30.5beta0.50.330,17YearQuarterDemandМАЗWMAESTrendAES11051501053.93118.56.75125.254121116113.85110.85-0.45110.421140 121.3333116.69113,8951.2975 115.19252170118125.74 121.72654.5645126.2913105 143.66673151.77 136.2086 9.523275 145.73184150 138.3333200 141.6667170151.66674.132.4126.846 0.080355 126.926353.1138.55 133.79223.51328 137.3055167.35 153.6545 11.68781 165.3423176.5 158.5582 8.295726 166.85392110 173.3333130160145.1 143.9907 -3.13586 140.8549136.6667130.2 139.7935-3.66654136.12721222324S Q10.270681yearAnn. Dem.25469interceptslope4072627Y4 Forecast689256570,5Y4Q1 Forec 186.49943.6102829303132333435363738

Exponential Smoothing is a type of Moving averages forecasting technique that weights past data in…

Answered: Question 2 What is the cumulative error…

MATLAB: An Introduction with Applications

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ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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QUESTION 1 Consider the following ARMA model for {y,}: y,=a,+ j=1 a + - E,+ 1=1 where {e} is the residual. Which of the following assumption(s) on the residuals {E} is needed to enable forecasting with this model in practice? Oa. a. ɛ ̟ is normally distributed. O b.e E, is mean-independent of y,y,-2…….. and e Oc. and e are stochastically independent for all +s O d. All of the above. QUESTION 2 How can the validity of the assumption(s) identified in Question 1 be examined in practice? O d. Use the Breusch-Pagan test, where the null hypothesis is that the distribution is normal. O D.Use the Ljung-Box test, where the null hypothesis is that the first K autocorrelations are zero. O C. Examine the SACF and SPACF of the estimated residuals O d. Both (b) and (c).
Question 10 A normally distributed sample has a mean = 5. and SD = 3.8, %3D 1. Find z for x = 4.7 2. Find x if z = 3.2
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QUESTION 7 A random sample of 1000 college applications showed that 747 (of those applications were submitted online. Compute the test statistic used to test the claim that among all college applications the percentage submitted online is equal to 75%. Round your answer to three decimal places.
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7:08 PM Sun Nov 7 68% AA www-awu.aleks.com B My Question... Bb 5 - Statistic... Session Clos... Bb Collection -... M Login Page Clos... A O DESCRIPTIVE STATISTICS Оpeyemi Interpreting relative frequency histograms Español Anagram puzzles involve sets of scrambled letters that must be rearranged to form words. A standard intelligence test employs these puzzles as an aid in assessing verbal ability. Several years ago, an undergraduate noticed that some versions of the intelligence test employed anagram puzzles with lower-case letters, and some versions employed anagram puzzles with upper-case letters. She performed experiments, with college students as participants, to examine times for completion for the two versions. The histogram below summarizes information about the times for completion for the 25 students she tested on the lower- case version. Frequency 8 7 6. Aa 2- 500 700 900 1100 1300 1500 Time for completion (in seconds) Based on the histogram, find the proportion of times for…
QUESTION 2 A survey by marketing students at KU was conducted to consider how many students attend football games regularly during the season. A random sample of 42 students was collected to estimate the proportion of students who regularly attend football games. The sample proportion was found to be 35%. Thirty-five percent is a O a. point estimate O b. sample parameter C. population parameter O d. point estimator
QUESTION 9 Use the data to find the value that corresponds to the 40th percentile. {2,7,8,1,5,12,9,20,20,9,30,35} 11.6 8.2 O 5.2 07.4

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Question 2 What is the cumulative error for the WMA3 forecast? (remember. weights are 0.5. 0.33, and 0.17) O 116.0 O 28.1 O 31.6 3.4 D Question 3 What is the Bias of the Exponential Smoothing forecast, with alpha = 0.3. O 10.5 O 28.1 O 02 O 142