Histogram of Aecdf{A)O 20060010004008001200A> c (mean (A),sd(A),var (A))[1]24.6001986.50163 7482.53279. Explain why the mean and the standarddeviation are so large

Explanation: Mean: Mean is a measure of Central Tendency and it represents the average score of the…

Answered: Histogram of A ecdfA) O 200 600 1000…

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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Scores of an IQ test have a beli shaped distrihution with a mean of 100 and a standard deviation of 11. Use the empirical rule to determine the following (a) What perceniage of people has an IQ score between 67 and 133? (D) What percentage of people has an 1Q score less than 67 or greater than 133? (c) What percentage of people has an 1Q score greater than 111? ta) 1% (Type an integer or a decimal (b) % (Type an integer or a decimal (c) % (Type an integer or a decimal) Next Statcrunch
a A2 The sample of size n=87 Is drawn From a population whose standard deviation 189 Find The margin of ERROV for a 90%. Confieuence Interat
10 points Q/ In the vehicle speed test, the results are given in the table below: Find 1. Arithmetic mean 2. Standard deviation 3. Skew coefficient 4. Kurtosis coefficient Speed range (km/hr Speed range (km/hr Speed range (km/hr Frequency(fi) Frequency(fi) Frequency(fi) 34-35.9 44-45.9 22 54-55.9 13 36-37.9 46-47.9 8 56-57.9 38-39.9 4 48-49.9 18 58-59.9 6. 40-41.9 10 50-51.9 17 60-61.9 42-43.9 7 52-53.9 16 62-63.9 3 add file
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Using Excel to calculate to 2 decimal places, if X follows a normal distribution with mean 55 and variance 16 and PDX > y) = 0.401294 then pic 5
Check my work (a) Find the standard error of the mean for each sampling situation (assuming a normal population). (Round your answers to 2 decimal places.) Standard Error a. o = 32, n = 4 b. o = 32, n = 16 C. 0= 32, n = 64 es (b) What happens to the standard error each time you quadruple the sample size? The standard error is by half 8:39 PM 51°F Cloudy A 12/18/2021 re to search insert
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To estimate the mean score ?μ of those who took the Medical College Admission Test on your campus, you will obtain the scores of an SRS of students. From published information you know that the scores are approximately Normal with standard deviation about 6.6.6.6. You want your sample mean ?⎯⎯⎯x¯ to estimate ?μ with an error of no more than 0.8 points0.8 points in either direction. What standard deviation must x¯ have so that 99.7% of all samples give an x¯ within 0.8 points of μ? Use the 68-95-99.7 rule. Give your answer to four decimal places. standard deviation of x¯: How large an SRS do you need in order to reduce the standard deviation of x¯ to the value you found? Give your answer rounded up to the nearest whole number. SRS size:
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Not everyone pays the same price with the same model as a car to figure illustrate a normal distribution for the price pay for a particular model of a new car the main is 18,000 and the standard deviationis 1000 used to 68 -95 -99.7 rule to find what percentage of buyers pay between 16,000 and 20,000

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Histogram of A ecdfA) O 200 600 1000 400 800 1200 A. > c (mean (A),sd (A),var (A)) [1] 24.60019 86.50163 7482.53279 Explain why the mean and the standard deviation are so large