Given the following informationAssumedTotalSum of Squ.-ares of devi-ations fromMeandeviationsfrom assumedmeanthe assumedmeanSeries41-1708180Series32-202290ySum of Products of deviations of x and y from their respectiveassumed mean 2880Number of Pairs of observations 10Calculate the Correlation Coefficient hetween x and y.%3D

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Answered: Given the following information Assumed…

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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10. a.) Find the z-value such that 80 percent of the area under the standard normal curve lies between -z and z. b). Find the z value if the normal curve area to the right of z is 0.6449. is from N(0,1) de in a cmall town at California is 0.2 everyday, what is the
Use the formula to find the standard error of the distribution of differences in sample means, I1 – X2. Samples of size 110 from Population 1 with mean 82 and standard deviation 14 and samples of size 80 from Population 2 with mean 76 and standard deviation 17 Round your answer for the standard error to two decimal places. standard error = i
Given Series A Series B 40 50 Mean 5. 6. Standard deviation 100 150 No. of items Find the combined mean and standard deviation of the two series.
Given the following figures 5,12,6,3,8,11,15,9,12,15 calculate a measure of relative Kurtosis round to 2 decimals I
6a.) Draw the graphs. Round your final answers up to 6 decimal places, if applicable. Give the correct units.
Consider the accompanying observations on stream flow (1000s of acre-feet) recorded at a station in Colorado for the period April 1-August 31 over a 31-year span. 150.58 66.24 117.64 89.59 204.91 108.91 185.36 210.07 109.11 117.70 285.37 280.55 299.87 58.86 100.85 94.33 125,86 302.74 311.13 151.32 247.11 203.24 127.96 330.33 114.79 145.11 262.09 200.19 493.80 111.78 133.86 An appropriate probability plot supports the use of the lognormal distribution as a reasonable model for stream flow. (a) Estimate the parameters of the distribution. [Hint: Remember that X has a lognormal distribution with parameters u and o? if In(X) is normally distributed with mean u and variance o2.] (Round your estimate for the mean to three decimal places, and round your estimate for the variance to four decimal places.) 62 = (b) Use the estimates of part (a) to calculate an estimate of the expected value of stream flow. [Hint: What is E(X)?] (Round your answer to two decimal places.) thousand acre-feet
Which of the following calculations is used to describe the accuracy of a series of measurements? Standard deviation Percent error Relative standard deviation R-squared Slope
Calculate the % approximate error relative to the true value of the area of a trapezoidal lot whose longer base is 12 m longer than the shorter base which is 10 m , and height of 20 m. There is no height deviation while each base is deviated 0.05 m below the value of each base.
A B. The mean blood cholesterol level for all men aged 20 to 34 years is p = 188 mg/dl with a standard devlation of a = 41 mg/dl. We suspect that the mean for cross-country runners is lower. A random sample of 20 cross-country runners yielded a mean level of 172 mg/di. SHOW YOUR FORMULAS AND ALL WORK ON THIS PAGE What is the standard deviation of the mean length X? Standard Deviation 41.0000
List the Level of Measurement for each of the following Nominal: Ordinal: Interval: Ratio:
sketch a standard normal curve and shade the area of interest for each problem: 1. Find the area under the standard normal curve that lies to the right of -1.07 0.6 0 4.2
Assume that the helium porosity (in percentage) of coal samples taken from any particular seam is normally distributed with true standard deviation 0.72. (c) How large a sample size is necessary if the width of the 95% interval is to be 0.45? (Round your answer up to the nearest whole number.) ................ specimens(d) What sample size is necessary to estimate true average porosity to within 0.24 with 99% confidence? (Round your answer up to the nearest whole number.) ................. specimens

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Given the following information Assumed Total Sum of Squ. ares of devi- ations from Мean deviations from assumed mean the assumed mean Series 41 -170 8180 Series 32 -20 2290 y