Question
In: Statistics and Probability
The weight of an item produced on a machine is normally distributed with mean 220 g...
The weight of an item produced on a machine is normally distributed with mean 220 g and standard deviation 5 g. Among 3500 items that are independently produced, how many of them are expected to weigh between 215 g and 225 g?
Solutions
orchestra answered 1 year agoRelated Solutions
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
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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.
1)The diameters of bolts produced by a certain machine are normally distributed with a mean of...
1)The diameters of bolts produced by a certain machine are
normally distributed with a mean of 0.30 inches and a standard
deviation of 0.01 inches. What is the probability of selecting a
bolt at random that has a diameter larger than 0.328 inches?
2)
The diameters of pencils produced by a certain machine are
normally distributed with a mean of 0.30 inches and a standard
deviation of 0.01 inches.
What is the probability that the diameter of a randomly selected...
The weight of hamsters is normally distributed with mean 63.5 g and standard deviation 12.2 g....
The weight of hamsters is normally distributed with mean 63.5 g
and standard deviation 12.2 g.
A. What is the probability that a randomly selected hamster
weighs less than 58.5 g? In order to receive full credit, sketch
the density curve, fill in the area and give the appropriate
probability notation. (5 points)
B. What is the probability that a randomly selected hamster
weighs more than 70.7 g? In order to receive full credit, sketch
the density curve, fill in...
Length of metal strips produced by a machine process are normally distributed with a mean length...
Length of metal strips produced by a machine process are
normally distributed with a mean length of 50mm and a standard
deviation of 5mm.
Giving your answer as a decimal to 4 decimal places, find the
probability that the length of a randomly selected strip is
a)
Shorter than 47mm
b)
Longer than 58mm
c)
Between 48mm48mm and 56mm
The closing stock price of Ahmadi, Inc. is normally distributed with a mean of 220 dollars...
The closing stock price of Ahmadi, Inc. is normally distributed
with a mean of 220 dollars and a standard deviation of 20
dollars.
find:
a.The probability of a closing stock price greater than 241.25
dollars is
b.The probability of a closing stock price less than 250 dollars
is
c.What percent of closing stock prices are between 180 and 220
dollars?
d.What is the minimum closing stock price of the middle 90% of
the closing prices?
Suppose that the mean weight of newborn babies is normally distributed with a mean of 6.9...
Suppose that the mean weight of newborn babies is normally
distributed with a mean of 6.9 pounds and a standard deviation of
0.8 pound. A developmental psychologist wants to test whether
newborn babies of mothers who use drugs during pregnancy differ in
weight from the average baby. The psychologist takes a random
sample of 30 mothers who used drugs during pregnancy and computes
the mean birth weight of these mothers’ babies. This sample of 30
mothers has a sample mean...
The weight of football players is normally distributed with a mean of 90kg and a standard...
The
weight of football players is normally distributed with a mean of
90kg and a standard deviation of 10 kg what is the probability that
in a team of 12 players the average weight is less than 85 kg
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