A statistical program is recommended.A certain company has been an authorized dealer for C&D marine radios for the past seven years. The following table reports the number of radios sold each year.O(a) Construct a time series plot.140120-100+80Number Sold 34 50 76 90 106 10960+4020Year0-01234Year45566 787130OⓇ140120-100+8060-29402000123Does a linear trend appear to be present?O No trend pattern appears to be present in the time series plot.An upward linear trend pattern appears to be present in the time series plot.O A trend pattern appears to be present in the time series plot, but it's a quadratic trend.O A downward linear trend pattern appears to be present in the time series plot.4Year567800140-120+100+80-60-402000(b) Using statistical software, develop a linear trend equation for this time series. (Round your numerical values to two decimal places.)T₂12(c) Use the linear trend equation developed in part (b) to develop a forecast for annual sales in year 8. (Round your answer to the nearest integer.)radios34Year5678140120-100+8060402000123 4Year5678

using excel we find slope and intercept for graph insert-line chart-marked chart an upward liear…

Answered: A certain company has been an…

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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The dataset below is based on a survey of 100 randomly selected travelers who were asked, “How many trips per year do you typically take?” 2 or Fewer 3 to 5 Trips 6 to 8 Trips 9 or More Trips Male 17 10 20 3 Female 19 21 8 2 What is the probability that a randomly selected survey participant is male or takes two or fewer trips per year? Group of answer choices 0.36 0.69 0.86 0.17 0.18
Please answer 2, 4, 5 and 6
A study was conducted to determine whether the final grade of a student in an introductory psychology course is linearly related to his or her performance on the verbal ability test administered before college entrance. The verbal scores and final grades for all 10 students in the class are shown in the table below. Student Verbal Score x Final Grade y 1 68 84 2 47 97 3 80 75 26 68 5 73 93 46 90 7 49 76 8 77 79 9 51 74 10 66 82 Find the following: (a) The correlation coefficient: r = (b) The least squares line: ŷ = (c) Calculate the residual for the fourth student:
Section H: Hyla chrysoscelis is a type of gray tree frog with a distinct mating call. Frogs are cold-blooded animals, and their physiology is affected by variations in temperature. Researchers wanted to know if the mating song of Hyla chrysoscelis is affected by the temperature of its natural habitat. They observed the mating song frequency (y in notes/sec) and the habitat (x in °Celsius) of 20 Hyla chrysoscelis in the wild. We aim to express the relationship between and y by using the simple linear regression model Yį = ßo + ß₁ x; + Eį. Table H.1 Coefficients Standardized Unstandardized Coefficients Coefficients 95.0% Confidence Interval for B Lower Bound B Std. Error Beta Sig. Upper Bound Model 1 (Constant) -6.190 -23.508 11.128 Temperature 2.331 1.602 3.059 a. Dependent Variable: Frequency Table H.2 Model Summary Model R Square R .846ª 1 .715 a. Predictors: (Constant), Temperature b. Dependent Variable: Frequency Adjusted R Square 8.243 .347 .699 Std. Error of the Estimate 2.82159…
Centerville Bikes and Stuff (CBS) sells motorcycles and accessories. The number of helmets sold by CBS per week for the past six weeks follows. Week 1 2 3 4 5 6 Value 17 12 14 10 16 13 (a) Construct a time series plot. A graph has a horizontal axis labeled "Week" with values from 0 to 7 and a vertical axis labeled "Time Series Value" with values from 0 to 20. The time series plot contains a series of 6 points connected by line segments. The segments and the approximate points they connect are as follows. The segments start at (1, 17), go down and right to (2, 12), go up and right to (3, 14), go down and right to (4, 10), go up and right to (5, 16), and go down and right to stop at (6, 13). A graph has a horizontal axis labeled "Week" with values from 0 to 7 and a vertical axis labeled "Time Series Value" with values from 0 to 20. The time series plot contains a series of 6 points connected by line segments. The segments and the approximate points they connect…
Should this table be graphed as linear,quadratic or exponential?
please help me solve these
Question Annual sales (in million taka) by a chain shop are provided below.Year201020112012201320142015201620172018Sales6812181513161210(a) Estimate first order autocorrelation function ?(1) and use this to comment on the properties of the time series.(b) Obtain forecast for the year 2019 from the trend model ?̂?=5.48+4.52?−0.50?2.
a. Obtain the linear trend equation for the following data on new checking accounts at Fair Savings Bank and use it to predict expected new checking accounts for periods 16 through 19. (Round your intermediate calculations and final answers to 2 deci places.) Period New Accounts Period, New Accounts Period New Accounts 1 2 3 4 Y Y16 Y17 Y18 Y19 200 214 211 220 235 6 7 8 9 10 237 248 250 258 267 11 12 13 14 15 281 275 287 288 316
Based on the following graph, what is the year when the largest decrease in GDP took place ? GDP (change YoY) 6% 5% 4% 4% 3% 3% 3% 3% 2% 2% 1% -1% -1% -8% 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010o 2011 2012 2013 2009 2001 2005 2007
QUESTION 20 Polly is a driving test examiner and has kept records of all the tests she has conducted over the last year. Overall 60% of her candidates passed. Her data is shown in the table below. % who had more than 20 lessons 30 % who both had more than 20 lessons and passed the test 25 % who took the test on a Monday 20 % who both took the test on a Monday and passed the test 12 % who were aged over 25 10 % who both took were aged over 25 and passed the test 6 % who wore glasses 55 % who both wore glasses and passed the test 33 Which ONE of the following pairs of probabilities does Polly’s data suggest are NOT independent probabilities? A. Having more than 20 lessons and passing the test. B. Taking the test on a Monday and passing the test. C. Being aged over 25 and passing the test. D. Wearing glasses and passing the test.
QUESTION FOUR The average prices of a Bath & Shower gel, a Body Moisturisers, a Deodorants and a Shaving cream were recorded in both 2011 and 2021 as below. (Prices are in R.) 2011 2021 4.1 4.2 Price (R) Number sold (in millions) Price (R) Number sold (in millions) Bath & Body Shower gel Moisturisers 17 7.5 23.7 8.2 7.3 4.2 12.5 5.1 Deodorants 5.5 12.6 8.7 13.5 Shaving cream 15.8 8.5 22.9 9.5 Find the Laspeyres price and quantity indices for 2021 using a base year of 2011 and interpret your answer Find the Paasche price and quantity indices for 2021 using a base year of 2011 and interpret your answer.

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