The following is a graph of the daily readings. Each night the CPAP machine records the number of stop breathingepisodes for a person with severe sleep apnea. Day 1 is when they received the machine. At day 40, the person with severe sleep apnea receives a new face mask that not only covers his nose, but his mouth too. What type of variation do we see between day 40 and day 79, Special or Common? Should Day 80 reading be investigated as a Special cause? What type of variation do we see between day 1 and day 40, Special or Common? True or False, Since the variation seen from day 1 to day 40 was common cause variation, the only way to improve (lower) the number of episodes per day is to change the system completely which they did when they got a new type of mask

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
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Author:Carter
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Chapter10: Statistics
Section10.2: Representing Data
Problem 5GP
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The following is a graph of the daily readings. Each night the CPAP machine records the number of stop breathingepisodes for a person with severe sleep apnea. Day 1 is when they received the machine. At day 40, the person with severe sleep apnea receives a new face mask that not only covers his nose, but his mouth too. What type of variation do we see between day 40 and day 79, Special or Common? Should Day 80 reading be investigated as a Special cause? What type of variation do we see between day 1 and day 40, Special or Common? True or False, Since the variation seen from day 1 to day 40 was common cause variation, the only way to improve (lower) the number of episodes per day is to change the system completely which they did when they got a new type of mask
The following is a graph of the daily readings. Each night the CPAP machine records the
number of "stop breathing" episodes for a person with severe sleep apnea. Day 1 is when they
received the machine. At day 40, the person with severe sleep apnea receives a new face mask
that not only covers his nose, but his mouth too.
What type of variation do we see between day 40 and day 79, Special or Common?
Should Day 80 reading be investigated as a Special cause?
What type of variation do we see between day 1 and day 40, Special or Common?
True or False, Since the variation seen from day 1 to day 40 was common cause variation, the
only way to improve (lower) the number of episodes per day is to change the system
completely which they did when they got a new type of mask.
Number of "Stop Breathing" Episodes
40
30-
20
10
0
-10
0
Number of "Stop Breathing" Episodes
Over a period of 80 Days
10
20
30
I
40
40
Day
50
60
70
80
90
Transcribed Image Text:The following is a graph of the daily readings. Each night the CPAP machine records the number of "stop breathing" episodes for a person with severe sleep apnea. Day 1 is when they received the machine. At day 40, the person with severe sleep apnea receives a new face mask that not only covers his nose, but his mouth too. What type of variation do we see between day 40 and day 79, Special or Common? Should Day 80 reading be investigated as a Special cause? What type of variation do we see between day 1 and day 40, Special or Common? True or False, Since the variation seen from day 1 to day 40 was common cause variation, the only way to improve (lower) the number of episodes per day is to change the system completely which they did when they got a new type of mask. Number of "Stop Breathing" Episodes 40 30- 20 10 0 -10 0 Number of "Stop Breathing" Episodes Over a period of 80 Days 10 20 30 I 40 40 Day 50 60 70 80 90
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