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4. Consider normally distributed diameters of bolts. If mean diameter is 6.10 mm with standard deviation...
4 . A machine makes spherical balls. Diameters X are normally distributed with mean 240.0 mm...
4 . A machine makes spherical balls. Diameters X are normally distributed with mean 240.0 mm and standard deviation 3.0 mm. Another machine, working independently, makes sockets with diameters Y that are normally distributed with mean 249.0 mm and standard deviation 4.0 mm. A ball will fit into the socket only if ; otherwise the ball is too big for the socket. Define the “gap” to be the difference between the socket diameter and the ball diameter. Therefore a ball...
Nuts and bolts are made separately and paired at random. Thus, the diameters can be considered...
Nuts and bolts are made separately and paired at random. Thus, the diameters can be considered independent random variables. The diameter of the nut is normally distributed with a mean of 20.8 mm and a standard deviation of 0.3 mm. The diameter of the bolt is normally distributed with a mean of 20.0 mm and a standard deviation of 0.2 mm. a. Find the mean and standard deviation of the difference in diameter between the nut and the bolt. b....
A) The diameters of pencils produced by a certain machine are normally distributed with a mean...
A) 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 pencil will be between 0.21 and 0.29 inches? B) 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...
A machine produces bolts with mean length 4 mm and a standard deviation of 0.3 mm....
A machine produces bolts with mean length 4 mm and a standard deviation of 0.3 mm. Bolts are measured and any which are shorter than 3.5 mm or longer than 4.4 mm are rejected. Calculate the proportion of bolts that are rejected. You are to assume the lengths are Normally distributed.
CShowe work and write theanswer) (8) The diameters of bolts produced by a certain machine are...
CShowe work and write theanswer) (8) The diameters of bolts produced by a certain machine are normally distributed with a mean of oceo inches and a standard deviation of 0.01 inches ca) what percentage (probability of bolts will have a diameter between 0.597 and 0.0003 inches Cb) if 25 bolts are randomly selected, what is the probability that the average of their diameters (X) will be between 0.597 and 0.603 inches?
A process manufactures ball bearings with diameters that are normally distributed with mean 25.15 mm and...
A process manufactures ball bearings with diameters that are normally distributed with mean 25.15 mm and standard deviation 0.08 mm. a) A particular ball bearing has a diameter of 25.2 mm. What percentile is its diameter on? (Round up the final answer to the nearest whole number.) b) To meet a certain specification, a ball bearing must have a diameter between 25.0 and 25.3 millimeters. What proportion of the ball bearings meet the specification?
The diameters of ball bearings are distributed normally. The mean diameter is 99 millimeters and the...
The diameters of ball bearings are distributed normally. The mean diameter is 99 millimeters and the standard deviation is 5 millimeters. Find the probability that the diameter of a selected bearing is greater than 109 millimeters. Round your answer to four decimal places.
Suppose that the diameters of oak trees are normally distributed with a mean of 4 feet...
Suppose that the diameters of oak trees are normally distributed with a mean of 4 feet and a standard deviation of 0.375 feet. Step 4 of 5: If we wanted to look at the top 15% of trees, what would their minimum diameter be? [Round to 2 decimals] Suppose that the diameters of oak trees are normally distributed with a mean of 4 feet and a standard deviation of 0.375 feet. Step 5 of 5: If we know that all...
Question 7 20 pts The diameters of bolts produced by a certain machine are normally distributed...
Question 7 20 pts 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 that a randomly selected bolt will have a diameter greater than 0.32 inches? (write your answer rounded to 4 decimal places) 0.0228 Question 15 20 pts Use the given data to find the equation of the regression line. Round the final values to three places, if necessary...
solve all parts please The diameter of the dot produced by a printer is normally distributed...
solve all parts please
The diameter of the dot produced by a printer is normally distributed with a mean diameter of 0.1 mm and standard deviation of 0.02 mm: (3 pts) (a) What is the probability that the diameter of the dot exceeds 0.066 mm? (b) What is the probability that the diameter is between 0.07 mm and 0.122 mm? (c) What standard deviation of diameters would be needed so that the probability in part (b) is 0.995?
CShowe work and write theanswer) (8) The diameters of bolts produced by a certain machine are normally distributed with a mean of oceo inches and a standard deviation of 0.01 inches ca) what percentage (probability of bolts will have a diameter between 0.597 and 0.0003 inches Cb) if 25 bolts are randomly selected, what is the probability that the average of their diameters (X) will be between 0.597 and 0.603 inches?
Question 7 20 pts 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 that a randomly selected bolt will have a diameter greater than 0.32 inches? (write your answer rounded to 4 decimal places) 0.0228 Question 15 20 pts Use the given data to find the equation of the regression line. Round the final values to three places, if necessary...
solve all parts please
The diameter of the dot produced by a printer is normally distributed with a mean diameter of 0.1 mm and standard deviation of 0.02 mm: (3 pts) (a) What is the probability that the diameter of the dot exceeds 0.066 mm? (b) What is the probability that the diameter is between 0.07 mm and 0.122 mm? (c) What standard deviation of diameters would be needed so that the probability in part (b) is 0.995?
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