QUESTION 7The table shows the results of a survey that asked 800 adults whether they use social media (Facebook, Twitter, and so on) regularly. The following table is based on the results of the survey.Age (years)Using socialmedia18-34 (A) 35-44 (B) 45+ (C)Yes (Y)2341509612690104No (N)Total360240200Total480320For the toolbar press ALT+F10 (PC) or ALT+FN+F10 (Mac)8004a. What is the probability that a randomly selected adult is not using social media? Round your answer to four decimal places.b. What is the probability that a randomly selected adult is 45+ years of age or does not use social media? Round your answer to four decimal places.c. What is the probability that a randomly selected adult does not use social media, given he/she is 45+ years of age? Round your answer to four decimal places.d. Are the events "The adult is 45+ years of age" and "The adult does not use social media" independent? Justify your answer using relevant probabilities.

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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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The table shows the breakdown of 96 thousand single parents on active duty in a country's military in a certain year. All numbers are in thousands and rounded to the nearest thousand. Use the data in the table to find the probability that a randomly selected single parent in the military is in the Air Force or the Marine Corps. Army Navy 24 8 32 Male 23 Female 10 Total 33 The probability that a randomly selected single parent in the military is in the Air Force or the Marine Corps is (Type an integer or decimal rounded to the nearest thousandth as needed.) Marine Air Corps Force 6 16 2 8 7 23 Total 69 27 96
A survey of athletes at a high school is conducted, and the following facts are discovered: 28% of the athletes are football players, 69% are basketball players, and 14% of the athletes play both football and basketball. An athlete is chosen at random from the high school: what is the probability that the athlete is either a football player or a basketball player?Probability = % (Please enter your answer as a percent)
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A survey of athletes at a high school is conducted, and the following facts are discovered: 39% of the athletes are football players, 36% are basketball players, and 24% of the athletes play both football and basketball. An athlete is chosen at random from the high school: what is the probability that the athlete is either a football player or a basketball player?Probability = % (Please enter your answer as a percent)
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