The graph illustrates a normal distribution for the prices paid for a particular model of HD television. Themean price paid is $1400 and the standard deviation is $95.1115 1210+1305 1400+1495 1590Distribution of Prices1685aWhat is the approximate percentage of buyers who paid more than $1590?%What is the approximate percentage of buyers who paid between $1400 and $1590?What is the approximate percentage of buyers who paid more than $1685?%What is the approximate percentage of buyers who paid between $1305 and $1495?%What is the approximate percentage of buyers who paid between $1400 and $1495?What is the approximate percentage of buyers who paid between $1115 and $1400?%

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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 graph illustrates a normal distribution for the prices paid for a particular model of HD television. The mean price paid is $2000 and the standard deviation is $90. 1730 1910 2000 2090 2180 2270 1820 Distribution of Prices What is the approximate percentage of buyers who paid less than $1820? What is the approximate percentage of buyers who paid between $1910 and $2090? What is the approximate percentage of buyers who paid less than $1730? What is the approximate percentage of buyers who paid between $2000 and $2270? What is the approximate percentage of buyers who paid between $1820 and $2000? What is the approximate percentage of buyers who paid between $1910 and $2000?
The problem below looks at forecasting methodologies to determine which forecasting model results in the most accurate forecasts. Accuracy is determined by the lowest mean absolute deviation. Emergency calls to the 911 system of York County for the past 24 weeks are shown below. Accurate forecasts are needed to determine the number of operators needed to staff the station. Week # of Calls 1 50 2 35 3 25 4 40 5 45 6 35 7 20 8 30 9 35 10 20 11 15 12 40 13 55 14 35 15 25 16 55 17 55 18 40 19 35 20 60 21 75 22 50 23 40 24 65 SIMPLE LINEAR REGRESSION Use all of the data, weeks 1 - 24, to calculate the regression equation for this data. Use the weeks (1-24) as the independent variable (x) and number of calls as the dependent variable (y). Once you have the equation, forecast weeks 4 through 24 (enter 4, 5, 6, etc. as the x…
Listed below, from left to right and then top to bottom, are numbers of law enforcement fatalities for 20 recent and consecutive years. First find the mean, identify each value as being above the mean (A) or below the mean (B), then test for randomness above and below the mean using α = 0.05. Is there a trend? 183 140 173 172 144 163 242 159 150 165 164 155 191 147 124 160 171 125 106 116 The mean is. (Type an integer or a decimal. Do not round.) C
The graph illustrates a normal distribution for the prices paid for a particular model of HD television. The mean price paid is $2000 and the standard deviation is $80 1760 1840 1920 2000 2080 2160 2240 Distribution of Prices What is the approximate percentage of buyers who paid between $2000 and S2160? 9% What is the approximate percentage of buyers who paid between $1920 and $2080? 0 0 What is the approximate percentage of buyers who paid between $2000 and S2080? 0 0 What is the approximate percentage of buyers who paid more than $2160 0 What is the approximate percentage of buyers who paid berween $2000 and $2240? 0 What is the approximate percentage of buyers m ho paid less than $1760?
Itemized Charitable Contributions The average charitable contribution itemized per income tax return in Pennsylvania is $792. Suppose that the distribution of contributions is normal with a standard deviation of $105. Find the limits for the middle 42% of contributions. Use a graphing calculator and round the answers to two decimal places. The limits for the middle 42% of contributions are $ and $ %24
The graph shows the distribution of the lengths (in seconds) of videos on a popular video-streaming site. The distribution is approximately Normal, with a mean What percentage of videos on the streaming site are between 264 and 489 seconds? 0.15% of 264 seconds and a standard deviation of 75 seconds. 49.85% 95% Streaming Videos 99.7% 36 30 114 189 264 339 414 489 564 Mark this and return Save and Exit Next Submit Previous Activity Next Activity
The target population is the weekly income of students in 2017. The mean weekly income of STAT150 students in 2017 (population mean), µ, was $198 and the population standard deviation, o, was $34. A histogram of the weekly income of a large number of students from this population is shown, below, to illustrate the shape of the weekly income distribution. Frequency 70 60 50 40 30 20 10 0 140 160 Histogram of Weekly Income 180 220 Weekly Income 200 240 260 280 a) What shape is the distribution of student weekly income?

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