. For this​ process, what is the proportion of shafts with a diameter between 23.991 mm and 24.000 mm?   The proportion of shafts with diameter between 23.991 mm and 24.000 mm is 0.3361. ​(Round to four decimal places as​ needed.) b. For this​ process, what is the probability that a shaft is​ acceptable?   The probability that a shaft is acceptable is 0.8450 . ​(Round to four decimal places as​ needed.) c. For this​ process, what is the diameter that will be exceeded by only 5% of the​ shafts?

Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter29: Tolerance, Clearance, And Interference
Section: Chapter Questions
Problem 16A: Spacers are manufactured to the mean dimension and tolerance shown in Figure 29-12. An inspector...
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A particular manufacturing design requires a shaft with a diameter of 24.000 ​mm, but shafts with diameters between 23.991 mm and 24.009 mm are acceptable. The manufacturing process yields shafts with diameters normally​ distributed, with a mean of 24.002 mm and a standard deviation of 0.006 mm.

Complete parts​ (a) through​ (d) below.
a. For this​ process, what is the proportion of shafts with a diameter between
23.991 mm and 24.000 mm?
 
The proportion of shafts with diameter between 23.991 mm and
24.000 mm is 0.3361.
​(Round to four decimal places as​ needed.)
b. For this​ process, what is the probability that a shaft is​ acceptable?
 
The probability that a shaft is acceptable is 0.8450
.
​(Round to four decimal places as​ needed.)
c. For this​ process, what is the diameter that will be exceeded by only
5% of the​ shafts?
 
The diameter that will be exceeded by only
5% of the shafts is 24.0119 mm.
 
d. What would be your answers to parts​ (a) through​ (c) if the standard deviation of the shaft diameters were
0.005 mm?
 
If the standard deviation is
0.005 mm, the proportion of shafts with diameter between 23.991 mm and 24.000 mm is 0.3307.
​(Round to four decimal places as​ needed.)
If the standard deviation is 0.005 ​mm, the probability that a shaft is acceptable is         .
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