You may need to use the appropriate appendix table or technology to answer this question.Given are five observations for two variables, x and y. (Round your answers to two decimal places.)X; 1 2 345461213(x* - x)21(a) Use sy = sVto estimate the standard deviation of ý* when x = 4.E(x, - x)2n(b) Use ý* + t/2a to develop a 95% confidence interval for the expected value of y when x = 4.to(x* - x)2I(x, - x)2(c) Use s= Spred1 +* +to estimate the standard deviation of an individual value of y when x = 4.n(d) Use ỹ* ± ta/25 predto develop a 95% prediction interval for y when x = 4.to

You may need to use the appropriate appendix table or technology to answer this question. Given are five observations for two variables, x and y. (Round your answers to two decimal places.) x; 1 2 3 4 5 4 6. 12 13 (a) Use s Sgn = sV 1 + (x* - x)2 to estimate the standard deviation of y when x = 4. E(x, - x) (b) Use î* + t2S * to develop a 95% confidence interval for the expected value of y when x = 4. to (x* - x)2 I(x, - x)2 (c) Use s Spred 1+ 1 to estimate the standard deviation of an individual value of y when x = 4. in (d) Use ý" ± t25pred to develop a 95% prediction interval for y when x = 4. to

You may need to use the appropriate appendix table or technology to answer this question. Given are five observations for two variables, x and y. (Round your answers to two decimal places.) x; 1 2 3 4 5 4 6. 12 13 (a) Use s Sgn = sV 1 + (x* - x)2 to estimate the standard deviation of y when x = 4. E(x, - x) (b) Use î* + t2S * to develop a 95% confidence interval for the expected value of y when x = 4. to (x* - x)2 I(x, - x)2 (c) Use s Spred 1+ 1 to estimate the standard deviation of an individual value of y when x = 4. in (d) Use ý" ± t25pred to develop a 95% prediction interval for y when x = 4. to

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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a b Absolute standard deviation = Coefficient of variation = y = 1.20 (+0.02) x 10-8-3.60(±0.2) × 10-⁹ x Result = Absolute standard deviation = Coefficient of variation = C Result = d y=90.95 (±0.08) - 89.40(±0.06) +0.200(+0.004) Absolute standard deviation == Coefficient of variation = Result = ± y= y = 0.0040 (+0.0005) x 10.28 (+0.02) × 395(+1) Result = ± Absolute standard deviation = Coefficient of variation = % 329(+0.03) x 10-14 1.47 (+0.04) x 10-16 % % H % ±
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A population of students earned test scores distributed normally with a mean of 65 and a standard deviation of 9. Find the percent of scores with a grade of F. Identify the following variables: μ: σ: x1: x2:z1 = , z2 = The percent of students that earned a grade of F, between 0 and 60, is = % Enter your answers as numbers accurate to 2
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5. Suppose the number of days it takes you to get a flu shot after it is available follows this equation: Y₂ = 30 - 2X₁ where y, is the number of days until you get the flu shot, and X, is the number of people you know who have the flu. Further, suppose on average you know 2.3 people who have the flu, with standard deviation 5. Suppose that the population has size m = 10. (a) Find the average time until you get the flu shot after it is available. (b) Find the standard deviation of time until you get the flu shot after it is available. (c) What is EY;?
Q2. Assume we have two populations represent the mercury contamination (g/Km3) in two different European cities. The mean of mercury contamination in the first city is 50 g/Km3 with standard deviation of 1O, and mean of mercury contamination in the second city is 40 g/Km3 with standard deviation of 8 g/Km3. If a sample of n=9 is taken form first city and a sample of n=16 is taken form second city, what is the probability that the difference between these two sample means is less than 9 g/Km3? 0.0614 0.0359 0.3985 0.0992 0.6015
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The coefficients of variations of wages of male workers and female workers are 55% and 70% respectively, while the standard deviations are 22.0 and 15.4 respectively calculate the overall wages of all workers given that 80% of the workers are male?
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