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  • MATH 221 Statistics for Decision-Making Week 5 quiz with all correct answers. 100% COMPLETE SOLUTION

MATH 221 Statistics for Decision-Making Week 5 quiz with all correct answers. 100% COMPLETE SOLUTION

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MATH 221 Statistics for Decision-Making Week 5 quiz with all correct answers. 100% COMPLETE SOLUTION Document Content and Description Below Question 1 2 / 2 pts (CO 4) Consider the following table: Age Group Frequency 18-29 983 30-39 784 40-49 686 50-59 632 60-69 541 70 and over 527 If you created the probability distribution fo r these data, what would be the probability of 40-49? 0.237 0.425 0.189 Correct! 0.165 Question 2 2 / 2 pts (CO 4) Consider the following table of hours worked by part-time employees. These employees must work in 5 hour blocks. Weekly hours worked Probability 5 0.06 15 0.61 20 0.18 25 0.15 Find the mean of this variable. 18.95 12.20 17.50 Correct! 16.80 Question 3 2 / 2 pts (CO 4) Consider the following table: Defects in batchProbability 0 0.21 1 0.19 2 0.30 3 0.15 4 0.11 5 0.04 Find the variance of this variable. 1.49 1.40 Correct! 1.97 1.88 Question 4 0 / 2 pts (CO 4) Consider the following table: Defects in batchProbability 0 0.04 1 0.11 2 0.25 3 0.20 4 0.19 5 0.21 Find the standard deviation of this variable. 1.41 3.02 Correct Answer 1.44 You Answered 2.08 text page 195 Question 5 2 / 2 pts (CO 4) Twenty-two percent of US teens have heard of a fax machine. You randomly select 12 US teens. Find the probability that the number of these selected teens that have heard of a fax machine is exactly six (first answer listed below). Find the probability that the number is more than 8 (second answer listed below). Correct! 0.024, 0.000 0.993, 0.000 0.024, 0.001

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    29 March 2022

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    MATH 221 Statistics for Decision Making Week 5 quiz with all correct answers. 100% COMPLETE SOLUTION Document Content and Description Below Question 1 2 / 2 pts (CO 4) Consider the following table: Age Group Frequency 18 29 983 30 39 784 40 49 686 50 59 632 60 69 541 70 and over 527 If you created the probability distribution fo r these data what would be the probability of 40 49? 0.237 0.425 0.189 Correct! 0.165 Question 2 2 / 2 pts (CO 4) Consider the following table of hours worked by part time employees. These employees must work in 5 hour blocks. Weekly hours worked Probability 5 0.06 15 0.61 20 0.18 25 0.15 Find the mean of this variable. 18.95 12.20 17.50 Correct! 16.80 Question 3 2 / 2 pts (CO 4) Consider the following table: Defects in batchProbability 0 0.21 1 0.19 2 0.30 3 0.15 4 0.11 5 0.04 Find the variance of this variable. 1.49 1.40 Correct! 1.97 1.88 Question 4 0 / 2 pts (CO 4) Consider the following table: Defects in batchProbability 0 0.04 1 0.11 2 0.25 3 0.20 4 0.19 5 0.21 Find the standard deviation of this variable. 1.41 3.02 Correct Answer 1.44 You Answered 2.08 text page 195 Question 5 2 / 2 pts (CO 4) Twenty two percent of US teens have heard of a fax machine. You randomly select 12 US teens. Find the probability that the number of these selected teens that have heard of a fax machine is exactly six (first answer listed below). Find the probability that the number is more than 8 (second answer listed below). Correct! 0.024 0.000 0.993 0.000 0.024 0.001

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