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Temperature of molten iron. The Cleveland Casting Plant produces iron automotive castings for Ford Motor Company. When the process is stable, the target pouring temperature of the molten iron is 2,550 degrees (Quality Engineering, Vol. 7, 1995).
The pouring temperatures (in degrees Fahrenheit) for a random sample of 10 crankshafts produced at the plant are listed in the table below. Conduct a test to determine whether the true mean pouring temperature differs from the target setting. Test using α = .01.
the weights in kilograms of a group of crates being shipped to panama are 95 103 110 104 105 112 and 92. what is the
If one of the 100 employees is randomly selected, find the probability of getting someone who carpools, someone who cycles to work, or someone who works part time.
Suppose that the population of heights of male college students is approximately normally distributed with mean m of 68 inches and standard deviation s of 3.75 inches.
Use the permutations rule to determine the total number of different ways the winners can be drawn.
For a random sample of 18 investments in China, the average return was 6.1% and the standard deviation was 5.3%. Conduct a test for equality of population means using α = 0.01.
The least-squares regression line equation and R2.
What is the required sample size for determining the proportion of defective items in a production process if the proportion is to be known to within 0.05 with 90% confidence? No guess as to the value of the population proportion is available.
A compute manufacturer is about to unveil a new,faster PC.The new PC is faster but intial tests incidcate there is more variation in the processing time.
Duplicate the steps used in the proof of Theorem 8 to prove Chebyshev's theorem for a discrete random variable X.
Construct the 95% confidence interval for the mean starting salary of the IT employees with an under graduate degree using t-distribution.
a poll found that 41 of male voters and 44female voters support a particular candidate.too test whether this candidate
Write a procedure to find all ordered triples of distinct positive integers i, j, and k less than or equal to a given integer n that sum to a given integer s.
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