Q1.In statistics a random variable is one that will take a valuenot known now with certainty.Which of these is not a random variable?A.B.C.D.The time the 06:15 train from Cambridge will actuallyarrive tomorrow.The time the 06:15 train from Cambridge actuallyarrived yesterday.Your score on the QTI course in the Summer.The winning postcode in the next Health Postcode lottery draw.

A random variable is a function whose value takes several values with same or different…

Answered: In statistics a random variable is one…

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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The Wildcats and the Leopards are evenly matched football teams. When they play, there is a 0.5 probability that the Wildcats will win. If they play 9 times, what is the probability that the Wildcats will win 6 of the games? Round your answer to the nearest tenth of a percent. A. 7.0% O B. 0.2% O C. 24.6% O D. 16.4%
Yesterday you set the player to randomly play 75 songs. The list below shows the numbers of each type of music you heard. Country—15 Rap—10 Pop—20 Classical—5 Rock—25 Based on yesterday’s data, what is the probability the next song the player randomly selects will be a classical song?
Men Women Boys Girls Survived 332 318 29 27 Died 1360 104 35 18 Use the chart to answer the next set of questions: The chart represents the results after the Titanic ship sank. If one of the Titanic passengers is randomly selected, find the probability of getting a man or someone who survived the sinking?
74% of all bald eagles survive their first year of life. Give your answers as decimals, not percents. If 37 bald eagles are randomly selected, find the probability thata. Exactly 25 of them survive their first year of life. _____b. At most 26 of them survive their first year of life. _____c. At least 27 of them survive their first year of life. _____d. Between 24 and 28 (including 24 and 28) of them survive their first year of life. _____
How are your grades? In a recent semester at a local university, 700 students enrolled in both Statistics I and Psychology I. Of these students, 77 got an A in statistics, 68 got an A in psychology, and 35 got an A in both statistics and psychology. Round the answers to four decimal places, as needed. Part 1 of 2 (a) Find the probability that a randomly chosen student got an A in statistics or psychology or both. The probability that a randomly chosen student got an A in statistics or psychology or both is Part 2 of 2 (b) Find the probability that a randomly chosen student did not get an A in psychology. The probability that a randomly chosen student did not get an A in psychology is X X
An M&M candy dispenser has 50 red, 50 blue, and 50 green M&Ms. The dispenser dispenses 20 M&Ms each time. What is the probability, that on the first use, you will get at most 5 red M&Ms out of the 20 dispensed. (round the answer to three decimals) 0.148 0.719 0.011 0.281 I need typed answer with explanation D
Suppose a weather report indicates that the probability of rain this week is 0.20. This week Next week According to the report, if it rains this week, then the probability of rain next Rain week is 0.33. If it does not rain this week, then the probability of rain next week is 0.17. The tree diagram models this weather report. 0.33 Rain 0.20 Determine the probability that it will not rain for the next two weeks. Express 0.67 No rain your answer as a decimal precise to two decimal places. Rain 0.17 probability = 0.80 No rain 0.83 No rain
A population proportion is 0.20. A random sample of size 150 will be taken and the sample proportion will be used to estimate the population proportion. Use the z-table. Round your answers to four decimal places. a. What is the probability that the sample proportion will be within 0.04 of the population proportion? 4582 b. What is the probability that the sample proportion will be within 0.08 of the population proportion? 9858 Hide Feedback Partially Correet
In a recent survey, 62% of the community favored building a police substation in their neighborhood. If 14 citizens are chosen, find the probability that exactly 10 of them favor the building of the police substation. Round the answer to the nearest thousandth. O A. 0.620 OB. 0.009 OC. 0.714 O D. 0.175 C
A vaccine has a 87% probability of being effective in preventing disease. The probability of getting the disease if a person is not vaccinated is 46%. In a certain geographic region, 21% of the people get vaccinated. If a person is selected at random, find the probability that he or she will contract the disease. Round your answer to three decimal places. Also, draw a tree diagram or a table to support your work.
A person must select 4 numbers from 16 numbers for a single ticket in a lottery game. Only one number has to match in order to win a prize. Find the probability of winning if a person buys one ticket. (Note: The numbers can be selected in any order.) A.0.0001 B.0.0018 C.0.25 D.0.0156

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