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5. The diameters of steel shafts produced by a certain manufacturing process should have a mean...
Suppose a batch of metal shafts produced in a manufacturing company have a standard deviation of...
Suppose a batch of metal shafts produced in a manufacturing company have a standard deviation of 1.3 and a mean diameter of 202 inches. If 70 shafts are sampled at random from the batch, what is the probability that the mean diameter of the sample shafts would be less than 201.9 inches? Round your answer to four decimal places.
Suppose a batch of metal shafts produced in a manufacturing company have a standard deviation of...
Suppose a batch of metal shafts produced in a manufacturing company have a standard deviation of 1.3 and a mean diameter of 202 inches. If 70 shafts are sampled at random from the batch, what is the probability that the mean diameter of the sample shafts would be less than 201.9 inches? Round your answer to four decimal places.
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...
Correct Suppose a batch of metal shafts produced in a manufacturing company have a standard deviation...
Correct Suppose a batch of metal shafts produced in a manufacturing company have a standard deviation of 1.4 and a mean diameter of 212 inches in r 80 shafts are sampled at random from the batch, what is the probability that the mean diameter of the sample shafts would differ from the population mean by greater than 0.1 inches? Round your answer to four decimal places How to enter your answer
A manufacturing process ball bearings with diameters that have a normal distribution with known population standard...
A manufacturing process ball bearings with diameters that have a normal distribution with known population standard deviation of .03 centimeters. Ball bearings with diameters that are too small or too large are undesirable. In order to test the claim that μ = 0.50 centimeters, perform a two-tailed hypotheses test at the 5% level of significance. A random sample of 49 gave a mean of 0.48 centimeters. Perform a hypotheses test and state your decision.
Suppose a batch of metal shafts produced in a manufacturing company have a variance of 99...
Suppose a batch of metal shafts produced in a manufacturing company have a variance of 99 and a mean diameter of 207207 inches. If 7272 shafts are sampled at random from the batch, what is the probability that the mean diameter of the sample shafts would differ from the population mean by less than 0.30.3 inches? Round your answer to four decimal places.
The piston diameter of a certain hand pump is 0.5 inch. The manager determines that the...
The piston diameter of a certain hand pump is 0.5 inch. The manager determines that the diameters are normally distributed, with a mean of 0.5 inch and a standard deviation of 0.004 inch. After recalibrating the production machine, the manager randomly selects 23 pistons and determines that the standard deviation is 0.0028 inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the alpha equals 0.05 level of significance? What are the correct...
Suppose that 27% of all steel shafts produced by a certain process are nonconforming but can...
Suppose that 27% of all steel shafts produced by a certain process are nonconforming but can be reworked (rather than having to be scrapped). (a) In a random sample of 225 shafts, find the approximate probability that between 46 and 70 (inclusive) are nonconforming and can be reworked. (b) In a random sample of 225 shafts, find the approximate probability that at least 65 are nonconforming and can be reworked.
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?
Company ABC claims that they produces cans whose diameters are normally distributed with a population mean...
Company ABC claims that they produces cans whose diameters are normally distributed with a population mean of 2 inches and a population standard deviation of 0.06 inch. A customer wants to check if the mean diameter of the cans is different than 2 inches. He takes a random sample of nine samples and finds a sample mean of 1.95 inches. Use a significance level of α = 0.07 to perform a hypothesis test using p value approach. Answer key: Two...
Correct Suppose a batch of metal shafts produced in a manufacturing company have a standard deviation of 1.4 and a mean diameter of 212 inches in r 80 shafts are sampled at random from the batch, what is the probability that the mean diameter of the sample shafts would differ from the population mean by greater than 0.1 inches? Round your answer to four decimal places How to enter your answer
Suppose that 27% of all steel shafts produced by a certain process are nonconforming but can be reworked (rather than having to be scrapped). (a) In a random sample of 225 shafts, find the approximate probability that between 46 and 70 (inclusive) are nonconforming and can be reworked. (b) In a random sample of 225 shafts, find the approximate probability that at least 65 are nonconforming and can be reworked.
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?
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