9. An estimator is (in most cases orA) a fixed number.B) a random variable.C) 0.D) None of the above.10. In general, an estimator is:A) an unobservable random variable.B) an unobservable fixed number.C) an observable random variable.D) None of the above.11. An estimate is:A) the value of an estimator in a sample.B) the value of the unknown parameter/quPage 2 of 826 of 2107 wordsDEO FocusMac

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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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34) A biology professor claims that, on the average, 15% of her students get a grade of A, 25% get a B, 40% get a C, 10% get a D, and 10 % get an F. The grades of a random sample of 131 students were recorded. The following table presents the results. 34) Grade 1 2 34 5 13 21 73 11 13 Observed What is the value ofy2? ) 14.902 D) 9.488 B) 11.143 A) 16.873 nd 4 columns. How many degrees of freedom are 35)
17.) What is the skew of the following data set X = [4; 5; 5; 6]?
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The question is in the picture’
4. The number of students entering in the canteen at any given hour is represented by a random variable X. 40 50 70 80 X P(x) 60 0.1 0.2 0.4 0.1 0.2 Find the probability that at least 50 students enter in the canteen.
1. Random variables X, and X, have the following distribution. fix, x) 10 20 5 0.22 0.10 0.10 10 0.10 0.08 0.12 20 0.05 0.05 0.18 Answer the following questions. a. Find f(10, 10). b. Find P(X, 210, X, S 10). c. Find f, (10). d. Find f.(20). e. Find the marginal distributions of X, and X f. Find P(X, 210). g. Find P(X, s 10).
24. Use the probability distribution to complete parts (a) through (d) below. The probability distribution of number of televisions per household in a small town X 0 3 P(x) 0.03 0.54 (a) Find the probability of randomly selecting a household that has one or two televisions. The probability is (Type an integer or a decimal. Do not round.) (b) Find the probability of randomly selecting a household that has two or more televisions. 1 0.11 2 0.32 The probability is (Type an integer or a decimal. Do not round.) (c) Find the probability of randomly selecting a household that has between one and three televisions, inclusive. The probability is (Type an integer or a decimal. Do not round.) (d) Find the probability of randomly selecting a household that has at most two televisions. The probability is (Type an integer or a decimal. Do not round.)
..... aded.) 1place a Table of numbers of girls and probabilities Number of Girls x P(x) 0.005 0.029 0.114 3 0.211 4 0.281 5 0.221 0.101 0.035 6 7 8 0.003 Print Done
Which of the following is the domain of a random variable? Choose the correct answer: a. set of whole numbers b. sample space c. set of real numbers d. subset of the outcomes of the experiment
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9. An estimator is (in most cases or A) a fixed number. B) a random variable. C) 0. D) None of the above.