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6.9. On a toy assembly line, daily output for each worker averages 46.7 units with a standard deviation of 8.90 units. Assume the histogram of daily output looks approximately like the normal curve. a. On a given day, what percentage of workers have a daily output over 50 units? b. 25 workers are selected at random. What is the probability that their output for a given day will average 50 units or higher? c. 25 workers are selected at random. There is an 80% chance that their output will average below units.

6.9. On a toy assembly line, daily output for each worker averages 46.7 units with a standard deviation of 8.90 units. Assume the histogram of daily output looks approximately like the normal curve. a. On a given day, what percentage of workers have a daily output over 50 units? b. 25 workers are selected at random. What is the probability that their output for a given day will average 50 units or higher? c. 25 workers are selected at random. There is an 80% chance that their output will average below units.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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6.9. On a toy assembly line, daily output for each worker averages 46.7 units with a standard deviation of 8.90 units. Assume the histogram of daily output looks approximately like the normal curve. a. On a given day, what percentage of workers have a daily output over 50 units? b. 25 workers are selected at random. What is the probability that their output for a given day will average 50 units or higher? c. 25 workers are selected at random. There is an 80% chance that their output will average below units.
Transcribed Image Text:6.9. On a toy assembly line, daily output for each worker averages 46.7 units with a standard deviation of 8.90 units. Assume the histogram of daily output looks approximately like the normal curve. a. On a given day, what percentage of workers have a daily output over 50 units? b. 25 workers are selected at random. What is the probability that their output for a given day will average 50 units or higher? c. 25 workers are selected at random. There is an 80% chance that their output will average below units.
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