Answered: TRUE OR FALSE 10. The probability that…

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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TRUE OR FALSE 10. The probability that a continuous random variable takes on a fixed value is always zero, whereas that of a discrete variable can be positive. 11. In interval estimation, decreasing the confidence coefficient results in a wider confidence interval. 12. If the test rejects Ho at 0.05 level of significance, then the test will likewise reject Ho at 0.10 level of significance. 13. Consider the experiment of tossing a balanced coin. Let the random variable X be the number of tosses until a head occurs. Then X is a discrete random variable. 14. The region of rejection is affected by the form of the alternative hypothesis. 15. Two events are independent if P(A|B) = P(B). 16. There are 20 ways of answering a 10-question true-or-false exam. 17. The level of significance is the maximum probability of committing a Type I error. 18. Adding a constant to all observations will not change the coefficient of variation. 19. The mean and the median are always unique. 20. In all distributions, the 5th decile is always equal to the median.

Definition Definition Middle value of a data set. The median divides a data set into two halves, and it also called the 50th percentile. The median is much less affected by outliers and skewed data than the mean. If the number of elements in a dataset is odd, then the middlemost element of the data arranged in ascending or descending order is the median. If the number of elements in the dataset is even, the average of the two central elements of the arranged data is the median of the set. For example, if a dataset has five items—12, 13, 21, 27, 31—the median is the third item in ascending order, or 21. If a dataset has six items—12, 13, 21, 27, 31, 33—the median is the average of the third (21) and fourth (27) items. It is calculated as follows: (21 + 27) / 2 = 24.

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