4)Number ofProbability,arrangements, P(x)0.26.7.0.28.0.390.2100.1Mean =Variance =Standard deviation =

Given : X p(x) 6 0.2 7 0.2 8 0.3 9 0.2 10 0.1

Answered: 4) Number of arrangements, P(x)…

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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Mean= 100 and standard deviation=10, what is probability of x<80 or x>110
IQs measured on a certain scale are normally distributed with a mean of 90 and a variance of 400. whats the probability that a random person will have an IQ between 120 and 130. the IQ of 51 people was taken, a sample mean of 90 and standard deviation of 64 was obtained. does this support that people tend to have IQs<100? use a 5% level of significance.
10. mean = 54.2; standard deviation = 12,3
help
How to find the simple variance & standard Deviation. Show the work for the simple variance mean: 52.1 range: 64 mode: 41.0 & 49.0
Mr. Karim is the owner of Philips home appliance. Recently Mr. Karim observed a differencein the taka amount of sales between the men and women he employed as sales associates. Asample of 40 days revealed the men sold a mean of Tk.1400 worth of appliance per day. For asample of 50 days, the women sold a mean of Tk1500 worth of appliance per day. Assumethe population standard deviation for men is Tk200 and for women Tk250. At the 0.05significance level, can Mr. Karim conclude that the mean amount sold per day is larger for thewomen?
22. What statistical value is obtained when the standard deviation is divided by the mean?
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A certain type of thread is manufactured wen a mean tensile strength of 75.3 klograms and a standard deviation of 4.8 kilograms. How is the variance of the sample mean changed when the sample size (a)increased from 64 to 900 ? (b) decreased from 256 to 36 ?
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A researcher wants to measure average cardiovascular health of university students and compare those scores to the average scores in the general population. Assuming that population variance is known, what statistical test is most appropriate for this study? independent-samples t-test single-sample t-test z-test for sample mean related-samples t-test
samples with sample size of 5 are drawn form a normal population with a mean of 100 and standard deviation of 1.5. Estimate: - Mean of the sample means - Standard deviation of the sample means

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4) Number of arrangements, P(x) Probability, 0.2 0.2 6. 0.3 0.2 0.1 8. 9. 10 Mean = Variance = Standard deviation=