Question

The diameter of a shaft in an optical storage drive is normally distributed with mean 0.6370 cm and standard deviation 0.00127 cm. The specification on the shaft are 0.635 ± 0.0038 cm. What percentage of shafts conforms to specifications? Use normal distribution

Answer #1

A particular manufacturing design requires a shaft with a
diameter between 21.89 mm and 22.010 mm. The manufacturing process
yields shafts with diameters normally distributed, with a mean of
22.002 mm and a standard deviation of 0.004 mm. Complete parts (a)
through (c).
a. For this process what is the proportion of shafts with a
diameter between 21.8921.89 mm and 22.00 mm?
The proportion of shafts with diameter between 21.89 mm and
22.00 mm is
B. For this process the...

A particular manufacturing design requires a shaft with a
diameter between 20.89 mm and 21.015 mm. The manufacturing process
yields shafts with diameters normally distributed with a mean of
21.004 mm and a standard deviation of 0.005 mm. Complete (a)
through (c)
a. The proportion of shafts with a diameter between 20.891 mm and
21.00 mm is_____
(Round to four decimal places as needed)
b. For this process, the probability that a shaft is acceptable is
_______
(Round to four...

The output voltage of a power supply is normally distributed
with a mean 5 V and standard deviation 0.02 V. The lower and upper
specifications for the output voltage are 4.97 V and 5.01 V,
respectively. What is the probability that the power supply
conforms to the specifications?

The diameter of a pipe is normally distributed, with a mean of
0.6 inch and a variance of 0.0016. What is the probability that the
diameter of a randomly selected pipe will exceed 0.632 inch? (You
may need to use the standard normal distribution table. Round your
answer to four decimal places.)

The tensile strength of a metal part is normally distributed
with mean 35 pounds and standard deviation 5 pounds. Suppose 40,000
parts are produced and specifications on the part have been
established as 35.0+- 4.75 pounds.
Find the percentage of parts that will fail to meet
specifications.
Find the number of parts that will fail to meet
specifications
Find the tensile strength at which 10% of the parts exceed the
upper specification limit

4. The tensile strength of a metal part is normally distributed
with mean 35 pounds and standard deviation 5 pounds. Suppose 40,000
parts are produced and specifications on the part have been
established as 35.0 ± 4.75 pounds. a) Find the percentage of parts
that will fail to meet specifications. b) Find the number of parts
that will fail to meet specifications c) Find the tensile
strength at which 10% of the parts exceed the upper specification
limit

Many manufacturing problems involve the matching of machine
parts, such as shafts that fit into a valve hole. A particular
design requires a shaft with a diameter of 22.00mm, but shafts with
diameters between 21.99m and 22.01mm are acceptable. Suppose that
the manufacturing process yields shafts with diameters normally
distributed, with a mean of 22.00 mm and a standard deviation of
0.005 mm.
For this process, what is the proportion of shafts with a
diameter between 21. 99mm and 22.00mm?...

Assume the diameter of tennis balls (under standard conditions)
is normally distributed, with a mean diameter of 6.7cm and a
standard deviation of 0.12cm If the random variable described here
is represented as X, then identify its type of distribution and
write down the value(s) of its parameters then Calculate the
probability using statistical tables that a randomly selected ball
has a diameter less than 6.52cm.

The lengths of pregnancies in a small rural village are normally
distributed with a mean of 260 days and a standard deviation of 13
days. A distribution of values is normal with a mean of 260 and a
standard deviation of 13.
What percentage of pregnancies last beyond 221 days?
P(X > 221 days) =

A waiter believes that tips are normally distributed with a mean
of $9.60 and a standard deviation of $2.40.
A. What percentage of the tips are above %8.50?
B.What percentage of the tips are below $8.00?
C. What percentage of tips are between $9.00 and $10.00?
D. Find the minimum tip in the top 3.25% of the normal
distribution.
E. Find the maximum tip in bottom 5% of the normal
distribution.

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 4 minutes ago

asked 10 minutes ago

asked 10 minutes ago

asked 10 minutes ago

asked 18 minutes ago

asked 29 minutes ago

asked 41 minutes ago

asked 45 minutes ago

asked 47 minutes ago

asked 47 minutes ago

asked 51 minutes ago

asked 54 minutes ago