www.awh.connectmath.com C connect MATH 1342 Spring 2018 - CRN 57604 Elementary S

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www.awh.connectmath.com C connect MATH 1342 Spring 2018 - CRN 57604 Elementary Statistics: A Step-8y Stap Approach, 10h Ed Welcome, Kasandn MATH Unit Two Review (14 questions) Previous 2 3 Question 4 of 14 (1 point) 43 Section Exercise 20 Urm 1 coetains 7 red balls and 1 black ball Urn 2 ceatains 1 red baill and 2 black balls. Urn 3 contains 5 red balls and 2 black balls. If an urn i selected at random and a ball is drawn, flad the probability that it will be red. Check Answer Eater your answer as& fraction or a decimal rounded to 3 decimal places Guided Solution Show Example Ask My Instructor Pind- Link to Textbook Save for Later Submit out this Esementary Statistics. A Step By-Step Appmach MATH 1342 Spring 2018-4 57604 Pi

Explanation / Answer

Urn 1 = 7 red balls and 1 black balls
Urn 2 = 1 red balls and 2 black balls
Urn 3 = 5 red balls and 2 black balls

There are 7+1+5 = 13 red balls.
There are a total of 7+1+5+1+2+2 = 18 balls

P(red) = (number of red balls)/(number of balls total)
P(red) = 13/18
P(red) = 0.722

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