Septembe r October Actuals December January 20.0 20.0 November 21.0 23.0 Forecast 18.0 Alpha = 0.1 lpha=.2 alpha =.3 Alpha=.4 Based on the forecasts for each alpha, compute the MSE and indicate which the best forecasts
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- The table in the picture shows measured values of particles in the air at a measuring station in Berlin.Calculate the forecast value for 2015 using a 4-period moving average. your Answer with 2 decimals.What is the approximate forecast for May using a four-month moving average? Nov. Dec. Jan. Feb. Mar. Apni. 39 36 40 42 46 46 OA 44 OB.3 OC42 O D.43Which of these four forecasts seems to have the most bias? A. (6,4,3,2) B. 3-period moving average C. Alpha = .3D. Simple moving average
- The MAD for the forecast developed using a weighted 2-year moving average with weights of 0.350.35 and 0.650.65 is what?Safari File Edit View History Bookmarks Window Help 100% 4A Sun 8:25 PM webassign.net Soluti... W Z Sco... E Samp... (18)... W Z c. W fall_exm... ST Critic... Get... Rese... T-tes... betw... ъ Му Q.. A public health official is uncertain if a popular intervention impacts the frequency of cyberbullying. The intervention was administered to a random sampie or 17 college students. Arter en Shot ..09.03 PM completion of the intervention, the college student sample was found to have an average cyberbullying frequency of 14. Cyberbullying in the population has an average of 18 and standard deviation of 8. What can be concluded with a = 0.10? a) What is the appropriate test statistic? ---Select--- en Shot ...7.39 PM b) Population: the nation Sample: current sample en Shot ...0.56 PM c) Obtain/compute the appropriate values to make a decision about Ho. Critical Value = ; Test Statistic = Decision: ---Select--- en Shot ...2.16 PM d) If appropriate, compute the CI. If not appropriate, input "na"…severe storms indicate that e3.5 feet. Does this information suggest that the storm is (perhaps temporarily) increasing above the severe rating? Use off fxed cement piers. Suppose that a reading of 31 waves showed an average wave height of x= 16.7 feet. Previous studies of Weatherwise is a magazine published by the American Meteorological Society. One issue gives a rating system used to classify Nor'easter storms that frequently hit New England and can cause much damage near the ocean. A severe storm has an average peak wave height of 164 feet for waves hitting the shore. Suppose that a Nor'easter is in progress at the severe storm class rating. Peak wave heights are usually measured from land C (a) What is the level of significance? State the null and alternate hypotheses. Ho: H- 16.4 ft; H:>'16.4 ft Ho: H 16.4 ft; H1: = 16.4 ft Ho: H- 16.4 ft; H: H+ 16.4 ft (b) What sampling distribution will you use? Explain the rationale for your choice of sampling distribution. The standard…
- 10 of 11 DNA markers of known lengths were separated on an agarose gel and visualised. The figure below is the standard plot of measurements made from a digital image of this gel. A line of best fit has been determined (illustrated with a dotted line) and the equation used to describe this trendline is shown. 3.5 3. 2.5 y = -0.003x+ 3.7876 R = 0.9964 1.5 0.5 of size marker in base pair s 2.QUESTION 3Based on the image attached, shows the forecasted temperature for two cities is given in the table below.Explain the reason why the forecast for City A is more reliable than the forecast for the City B. Justify your answer.Researchers fed mice a specific amount of Toxaphene, a poisonous pesticide, and studied their nervous systems to find out why Toxaphene causes tremors. The absolute refractory period, time required for nerves to recover after a stimulus, was measured and varies Normally. The measurements, in milliseconds, for four mice were 1.7, 1.8, 1.9, and 2.0. Part A: Find the mean refractory period and the standard error of the mean. Part B: Calculate a 90% confidence interval for the mean absolute refractory period for all mice when subjected to the same treatment. Part C: Suppose the mean absolute refractory period for unpoisoned mice is known to be 1.3 milliseconds. Toxaphene poisoning should slow nerve recovery and therefore increase this period. Do the data give good evidence to support this theory? What can you conclude from a hypothesis test? Justify your response with statistical reasoning.
- The following is the recorded earthquakes on South Carolina from August, 2016 to February, 2017. Use the data to find the residuals.What are the most likely values of r for each plot of data shown below? Figure 1 *AT THE TOP r = -0.5 r = 0 r= 0.5 r = 1 ? Answer: Figure 2 *AT THE Bottom r = -0.5 r = 0 r= 0.5 r = 1 ? Answer:c. Predict expected lawn mower sales for the first week in August, given fertilizer sales six weeks earlier of 1.8 tons. (Round your answer to two decimal points.) Resulting Forecast