Question
In: Statistics and Probability
precision manufacturing: a process manufactures ball bearings with diameters that are normally distributed with mean 25.0...
precision manufacturing: a process manufactures ball bearings with diameters that are normally distributed with mean 25.0 millimeters and standard deviation 0.07 millimeter.
(a) find the 60th percentile of the diameters.
(b) find the 67th percentile of the diameters.
(c) a hole is to be designed so that 2% of the ball bearings will fit through it. the bearings that fit through the hole will be melted down and remade. what should the diameter of the hole be?
(d)between what 2 values are the middle 95% of the diameter?
Solutions
orchestra answered 1 year agoRelated Solutions
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Assume that round widgets from a manufacturing process have diameters that are normally distributed with mean...
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25,000 b. 1 out of 50,000 c. 1 out of 5,000 d. 1 out of 1,000
Assume that round widgets from a manufacturing process have diameters that are normally distributed with mean...
Assume that round widgets from a manufacturing process have
diameters that are normally distributed with mean 175.25
centimeters and standard deviation 2.35 centimeters. The chances
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A manufacturer produces ball bearings, normally distributed, with unknown mean and standard deviation. A sample of...
A manufacturer produces ball bearings, normally
distributed, with unknown mean and standard deviation. A sample of
25 has a mean of 2.5cm. The 99% confidence interval has length 4cm
(double-sided).
Which statement is correct (use t-distribution):
s2 = 23.42cm2
b) s2 =
12.82cm2
c) s=
3.58cm
d) s=
4.84cm
The 99% prediction interval measures (use
t-distribution):
a) 20.38
cm
b) 10.21 cm
c)
20.42 cm
d) 10.19 cm
From a box containing oatmeal...
A company manufactures rods whose diameters are normally distributed with a mean of 5 mm and...
A company manufactures rods whose diameters are normally
distributed with a mean of 5 mm and a standard deviation of 0.05
mm. It also drills holes to receive the rods and the diameters of
these holes are normally distributed with a mean of 5.2 mm and a
standard deviation of 0.07 mm. The rods are allocated to the holes
at random. What proportion of rods will fit into the holes?
The diameters of a batch of ball bearings are known to follow a normal distribution with...
The diameters of a batch of ball bearings are known to follow a
normal distribution with a mean 4.0 in and a standard deviation of
0.15 in. If a ball bearing is chosen randomly, find the probability
of realizing the following event: (a) a diameter between 3.8 in and
4.3 in, (b) a diameter smaller than 3 9 in, (c) a diameter larger
than 4.2 in.
The diameters of bolts produced in a machine shop are normally distributed with a mean of...
The diameters of bolts produced in a machine shop are normally
distributed with a mean of 5.34 millimeters and a standard
deviation of 0.03 millimeters. Find the two diameters that separate
the top 8% and the bottom 8%. These diameters could serve as limits
used to identify which bolts should be rejected. Round your answer
to the nearest hundredth, if necessary
The diameters of bolts produced in a machine shop are normally distributed with a mean of...
The diameters of bolts
produced in a machine shop are normally distributed with a mean of
5.58 millimeters and a standard deviation of 0.04 millimeters. Find
the two diameters that separate the top 5%and the bottom 5%. These
diameters could serve as limits used to identify which bolts should
be rejected. Round your answer to the nearest hundredth, if
necessary.
Answer
TablesKeypad
If you would like to
look up the value in a table, select the table you want to...
The diameters of bolts produced in a machine shop are normally distributed with a mean of...
The diameters of bolts produced in a machine shop are normally
distributed with a mean of 5.67 millimeters and a standard
deviation of 0.03 millimeters. Find the two diameters that separate
the top 9% and the bottom 9%. These diameters could serve as limits
used to identify which bolts should be rejected. Round your answer
to the nearest hundredth, if necessary.
The diameters of bolts produced in a machine shop are normally distributed with a mean of...
The diameters of bolts produced in a machine shop are normally
distributed with a mean of 5.18 millimeters and a standard
deviation of 0.07 millimeters. Find the two diameters that separate
the top 3% and the bottom 3%. These diameters could serve as limits
used to identify which bolts should be rejected. Round your answer
to the nearest hundredth, if necessary.
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