2. A nurse supervisor has found that staff nurses, on the average, complete a certain task in 10 minutes. If the times required to complete the task are approximately normally distributed with a standard deviation of 3 minutes, find: a. The proportion of nurses completing the task in less than 4 minutes. b. The proportion of nurses requiring more than 5 minutes to complete the task. c. The probability that a nurse who has just been assigned the task will complete it within 3 minutes.

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
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Compute and show all of the solutions from a to c

2. A nurse supervisor has found that staff nurses, on the average, complete a certain task in 10
minutes.
If the times required to complete the task are approximately normally distributed with a
standard
deviation of 3 minutes, find:
a. The proportion of nurses completing the task in less than 4 minutes.
b. The proportion of nurses requiring more than 5 minutes to complete the task.
c. The probability that a nurse who has just been assigned the task will complete it within
3 minutes.
Transcribed Image Text:2. A nurse supervisor has found that staff nurses, on the average, complete a certain task in 10 minutes. If the times required to complete the task are approximately normally distributed with a standard deviation of 3 minutes, find: a. The proportion of nurses completing the task in less than 4 minutes. b. The proportion of nurses requiring more than 5 minutes to complete the task. c. The probability that a nurse who has just been assigned the task will complete it within 3 minutes.
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