5. The following table includes the information about a monthly time series.MonthTime SeriesJanuary21February17March19April24When the exponential smoothing method with a = 0.1 is applied, what is the mean absolutedeviation (MAD)?A. 20.796.В. 9.16.С. 3.05.D. 3.56.6. The following table includes the information about a monthly time series.MonthTime SeriesJanuary21February17March19April24When the exponential smoothing method with a = 0.5 is applied, what is the mean square error(MSE)?A. 21.5.В. 25.С. 41.D. 13.67.

Error is calculated by subtracting the actual and predicted value. In the exponential smoothing…

Answered: 5. The following table includes the…

College Algebra

1st Edition

ISBN:9781938168383

Author:Jay Abramson

Publisher:Jay Abramson

Chapter4: Linear Functions

Section4.3: Fitting Linear Models To Data

Problem 23SE: The US. import of wine (in hectoliters) for several years is given in Table 5. Determine whether the...

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Respiratory Rate Researchers have found that the 95 th percentile the value at which 95% of the data are at or below for respiratory rates in breath per minute during the first 3 years of infancy are given by y=101.82411-0.0125995x+0.00013401x2 for awake infants and y=101.72858-0.0139928x+0.00017646x2 for sleeping infants, where x is the age in months. Source: Pediatrics. a. What is the domain for each function? b. For each respiratory rate, is the rate decreasing or increasing over the first 3 years of life? Hint: Is the graph of the quadratic in the exponent opening upward or downward? Where is the vertex? c. Verify your answer to part b using a graphing calculator. d. For a 1- year-old infant in the 95 th percentile, how much higher is the walking respiratory rate then the sleeping respiratory rate? e. f.
The US. import of wine (in hectoliters) for several years is given in Table 5. Determine whether the trend appearslinear. Ifso, and assuming the trend continues, in what year will imports exceed 12,000 hectoliters?
Table 6 shows the year and the number ofpeople unemployed in a particular city for several years. Determine whether the trend appears linear. If so, and assuming the trend continues, in what year will the number of unemployed reach 5 people?
5.) (10 pts) The following graphs show survival in the U.S. from 1900 (left-most curve) to 2020 (right-most curve) in 10-year intervals. Estimate the median lifespan in (a) 1900 (b) 1940, and (c) 2020. 100 90 Percent Surviving 70 60 50 40 30 10 882882820° 2020 1900 0 228288 28 28 2 2 Age
39. The following table gives the approximate increase in sea level in inches over 20 years starting in the given year. Estimate the net change in mean sea level from 1870 to 2010. Starting Year 1870 1890 1910 1930 1950 1970 1990 20-Year Change 0.3 1.5 0.2 2.8 0.7 1.5 4 Table 5.3 Approximate 20-Year Sea Level Increases, 1870-1990 Source: http://link.springer.com/article/ 10.1007%2Fs10712-011-9119-1
Calculate trend values by the method of least square from the data given below and estimate the sales for 1983 : Year 1976 1977 1978 1979 1980 : Sales of Co. ('000,000) : 70 74 80 86 90
Q.2: Mr. Ahmed is planning to recruit some additional sales staff for his company Al Khalif LLC. Since the sale varies from time to time, he decided to recruit staff if average sales is more than RO 35000. Following are the details of his company's sales for past 50 days. Sales 00- 10-20 20-30 30-40 40-50 50-60 60-70. 70- ('000RO) 10 80 No. of 05 07 10 05 08 05 05 05 days a) What would you suggest Mr. Ahmed regarding recruitment of sales staff? Give reason for your answer. b) What is the mode sale of the company? Why do you calculate mode sales?
Cardiovascular DiseaseSuppose the incidence rate of myocardial infarction (MI)was 5 per 1000 among 45- to 54-year-old men in 2000.To look at changes in incidence over time, 5000 men in thisage group were followed for 1 year starting in 2010. Fifteennew cases of MI were found.Suppose that 25% of patients with MI in 2000 died within24 hours. This proportion is called the 24-hour case-fatalityrate.7.14 Of the 15 new MI cases in the preceding study,5 died within 24 hours. Test whether the 24-hour casefatality rate changed from 2000 to 2010.
Cardiovascular DiseaseSuppose the incidence rate of myocardial infarction (MI)was 5 per 1000 among 45- to 54-year-old men in 2000.To look at changes in incidence over time, 5000 men in thisage group were followed for 1 year starting in 2010. Fifteennew cases of MI were found. Suppose that 25% of patients with MI in 2000 died within24 hours. This proportion is called the 24-hour case-fatalityrate.7.14 Of the 15 new MI cases in the preceding study,5 died within 24 hours. Test whether the 24-hour casefatality rate changed from 2000 to 2010.
Cardiovascular DiseaseSuppose the incidence rate of myocardial infarction (MI)was 5 per 1000 among 45- to 54-year-old men in 2000.To look at changes in incidence over time, 5000 men in thisage group were followed for 1 year starting in 2010. Fifteennew cases of MI were found. Suppose that 25% of patients with MI in 2000 died within24 hours. This proportion is called the 24-hour case-fatalityrate. 7.15 )Suppose we eventually plan to accumulate 50 MIcases during the period 2010–2015. Assume that the24-hour case-fatality rate is truly 20% during this period.How much power would such a study have in distinguishingbetween case-fatality rates in 2000 and 2010–2015 if atwo-sided test with significance level .05 is planned?
Cardiovascular DiseaseSuppose the incidence rate of myocardial infarction (MI)was 5 per 1000 among 45- to 54-year-old men in 2000.To look at changes in incidence over time, 5000 men in thisage group were followed for 1 year starting in 2010. Fifteennew cases of MI were found. Suppose that 25% of patients with MI in 2000 died within24 hours. This proportion is called the 24-hour case-fatalityrate. 7.16 How large a sample is needed in Problem 7.15 toachieve 90% power?
2.7 2.8 2.9 3.1 2435 2975 3633 4438 5420 Estimate h'(2.9) using the table above. h'(2.9) ~

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